{
  "schema_version": "2.0",
  "product": {
    "brand": "Apple",
    "category": "portable-media-player",
    "family": "iPod",
    "model": "iPod nano (4th generation)",
    "model_slug": "ipod-nano-4th-generation",
    "model_year": 2008,
    "year_introduced": 2008,
    "variant": null,
    "model_numbers": [
      "A1285"
    ],
    "storage_options": [
      "8 GB",
      "16 GB"
    ]
  },
  "source": {
    "source_type": "manufacturer",
    "source_url": "https://support.apple.com/en-ie/112320",
    "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html",
    "source_title": "iPod nano (4th generation) - Technical Specifications - Apple Support (IE)",
    "publisher": "Apple Support (Ireland)",
    "published_at": null,
    "checked_at": "2026-11-11",
    "verification_status": "content_verified",
    "verification_notes": "Official Apple technical-specification page captured as original HTML on 2026-11-11; 18 source sections extracted. The first record section preserves model-identification evidence from Apple's separate identification page.",
    "notes": [
      "Technical specifications in the following sections are transcribed from the model-specific Apple technical-specification page; each section carries its own source URL and archive path.",
      "The first section preserves model number/introduction-date evidence from Apple's separate identification page: https://support.apple.com/en-ie/103823, archived at apple_remaining_extraction/technical_specs_html/ipod-index.html."
    ]
  },
  "extraction": {
    "method": "section_preserving",
    "normalization_status": "partially_normalized",
    "note": "Official Apple iPod identification text retained. Explicit model numbers, introduction dates, capacity options and navigation interface extracted where present with source-section provenance. These are identification-page records, not full historical technical-specification sheets; no absent specs inferred.",
    "extracted_at": "2026-11-09",
    "reviewed_at": "2026-11-09"
  },
  "sections": [
    {
      "heading": "iPod nano (4th generation)",
      "source_text": "Navigation: Click Wheel\nCapacity: 8 and 16 GB\nModel number and date introduced: A1285: September 2008\nYou can distinguish the iPod nano (4th generation) from previous iPod nano models by:\nIts taller screen\nIts curved surface\nIts oval shape when seen from the top or bottom\nThe inclusion of an accelerometer that is used by the Shake feature.\nThe iPod nano (4th generation) comes in nine colours.",
      "source_url": "https://support.apple.com/en-ie/103823",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-index.html"
    },
    {
      "heading": "Size and weight",
      "source_text": "Height : 3.6 inches (90.7 mm)\nWidth : 1.5 inches (38.7 mm)\nDepth : 0.24 inch (6.2 mm)\nWeight : 1.3 ounces (36.8 grams) 1",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Capacity",
      "source_text": "8GB or 16GB flash drive 2\nHolds up to 2,000 or 4,000 songs in 128-Kbps AAC format 3\nHolds up to 7,000 or 14,000 iPod-viewable photos 4\nHolds up to 8 hours or 16 hours of video 5\nStores data via USB flash drive",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Accessibility",
      "source_text": "Spoken menus allow listeners to hear many of the names of menus, song titles, and artists without viewing the screen.\nAn alternative large font can make menus easier to read.\nA high-resolution LCD display with adjustable contrast and backlight settings makes it easier to read in low light.\nCaptions in video are displayed when they are present using a legible, high-contrast white-on-black font.",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Environmental Status Report",
      "source_text": "iPod nano embodies Apple’s continuing environmental progress. It is designed with the following features to reduce environmental impact:\nArsenic-free glass\nBrominated flame retardant-free\nMercury-free\nPVC-free\nHighly recyclable aluminum enclosure",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Display",
      "source_text": "2-inch (diagonal) liquid crystal display with blue-white LED backlight\n320-by-240-pixel resolution at 204 pixels per inch",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Audio",
      "source_text": "Frequency response: 20Hz to 20,000Hz\nAudio formats supported: AAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, AIFF, and WAV\nUser-configurable maximum volume limit",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Headphones",
      "source_text": "Earphones\nFrequency response: 20Hz to 20,000Hz\nImpedance: 32 ohms",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Video",
      "source_text": "H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Languages",
      "source_text": "Czech, Danish, Dutch, English, Finnish, French, German, Greek, Hungarian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish, Traditional Chinese, and Turkish\nAdditional language support for display of song, album, and artist information: Bulgarian, Croatian, Romanian, Serbian, Slovak, Slovenian, Thai, Ukrainian, and Vietnamese",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "In the box",
      "source_text": "iPod nano\nEarphones\nUSB 2.0 cable\nDock adapter\nQuick Start guide",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Input and output",
      "source_text": "Dock connector\n3.5-mm stereo headphone jack",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "External buttons and controls",
      "source_text": "Hold switch\nClick Wheel",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Battery and power 6",
      "source_text": "Built-in rechargeable lithium ion battery\nPlayback time\nMusic playback time: Up to 24 hours when fully charged\nVideo playback time: Up to 4 hours when fully charged\nCharging via USB to computer system or power adapter (sold separately)\nFast-charge time: about 1.5 hours (charges up to 80% of battery capacity)\nFull-charge time: about 3 hours",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Mac system requirements",
      "source_text": "Mac computer with USB 2.0 port\nMac OS X v10.4.11 or later\niTunes 8 or later 7",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Windows system requirements",
      "source_text": "PC with USB 2.0 port\nWindows Vista or Windows XP Home or Professional with Service Pack 3\niTunes 8 or later 7",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Environmental requirements",
      "source_text": "Operating temperature: 32° to 95° F (0° to 35° C)\nNonoperating temperature: -4° to 113° F\n(-20° to 45° C)\nRelative humidity: 5% to 95% noncondensing\nMaximum operating altitude: 10,000 feet (3000 m)",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Comparison Chart",
      "source_text": "iPod shuffle\niPod nano\niPod classic\niPod touch\nStorage\n1GB\n2GB\n8GB\n16GB\n120GB\n8GB\n16GB\n32GB\nSongs\n240\n500\n2,000\n4,000\n30,000\n1,750\n3,500\n7,000\nBattery life\nUp to 12 hours of music playback\nUp to 24 hours of music playback; up to 4 hours of video playback\nUp to 36 hours of music playback; up to 6 hours of video playback\nUp to 36 hours of music playback; up to 6 hours of video playback\nDisplay\n2-inch (diagonal) color LCD with LED backlight\n2.5-inch (diagonal) color LCD with LED backlight\n3.5-inch (diagonal) widescreen Multi-Touch display\nPorts\nStereo minijack\nDock connector, stereo minijack\nDock connector, stereo minijack\nDock connector, stereo minijack\nConnectivity\nUSB through included dock\nUSB through dock connector; component and composite video through dock connector (with AV cables, sold separately); audio through headphone jack\nUSB through dock connector; component and composite video through dock connector (with AV cables, sold separately); audio through headphone jack\nUSB through dock connector; component and composite video through dock connector (with AV cables, sold separately); audio through headphone jack\nWireless data\nWi-Fi (802.11b/g)\nNike + iPod support built in\nMaps location-based service\nCharge time\nAbout 4 hours (2-hour fast charge to 80% capacity)\nAbout 3 hours (1.5-hour fast charge to 80% capacity)\nAbout 4 hours (2-hour fast charge to 80% capacity)\nAbout 4 hours (2-hour fast charge to 80% capacity)\nAudio support\nAAC (8 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (8 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), WAV, and AIFF\nAAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, WAV, and AIFF\nAAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, WAV, and AIFF\nAAC (16 to 320 Kbps), Protected AAC (from iTunes Store), MP3 (16 to 320 Kbps), MP3 VBR, Audible (formats 2, 3, and 4), Apple Lossless, WAV, and AIFF\nPhoto support\nSyncs iPod-viewable photos in JPEG, BMP, GIF, TIFF, PSD (Mac only), and PNG formats\nSyncs iPod-viewable photos in JPEG, BMP, GIF, TIFF, PSD (Mac only), and PNG formats\nSyncs iPod-viewable photos in JPEG, BMP, GIF, TIFF, PSD (Mac only), and PNG formats\nVideo support\nH.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats\nH.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats\nH.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; H.264 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Baseline Profile up to Level 3.0 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats\nSize\n1.07 x 1.62 x 0.41 inches\n(27.3 x 41.2 x 10.5 mm) including clip\n3.6 x 1.5 x 0.24 inches\n(90.7 x 38.7 x 6.2 mm)\n4.1 x 2.4 x 0.41 inches\n(103.5 x 61.8 x 10.5 mm)\n4.3 x 2.4 x 0.33 inches\n(110 x 61.8 x 8.5 mm)\nWeight\n0.55 ounce (15.6 grams)\n1.3 ounces (36.8 grams)\n4.9 ounces (140 grams)\n4.05 ounces (115 grams)\nIncluded accessories\nEarphones, USB dock\nEarphones, USB cable, dock adapter\nEarphones, USB cable, dock adapter\nEarphones, USB cable, dock adapter, polishing cloth",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    },
    {
      "heading": "Accessories",
      "source_text": "In-Ear Headphones with Remote and Mic Engineered for extreme clarity and audio accuracy, these headphones let you hear musical details you’ve been missing.\nUSB Power Adapter Use this ultracompact USB-based adapter to charge your iPhone or iPod whenever it’s not connected to a computer.\nEarphones with Remote and Mic These earbud headphones have convenient buttons that let you adjust volume and control music and video playback.\nUniversal Dock with Remote Get easy access to a USB port for charging and syncing your iPod or for connecting to a TV or speakers.\nApple iPod Radio Remote\nApple Composite AV Cable\nApple Component AV Cable\nApple Dock Connector to USB Cable\niPod Universal Dock Adapter 3-Pack\nSee more accessories in the Apple Online Store\nWeight varies by configuration and manufacturing process.\n1GB = 1 billion bytes; actual formatted capacity less.\nMusic capacity is based on 4 minutes per song and 128-Kbps AAC encoding; actual capacity varies by content.\nPhoto capacity is based on iPod-viewable photos transferred from iTunes.\nVideo capacity is based on H.264 1.5-Mbps video at 640-by-480 resolution combined with 128-Kbps audio; actual capacity varies by content.\nTesting conducted by Apple in August 2008 using preproduction hardware and software. The playlist contained 358 unique audio tracks consisting of content imported from CDs using iTunes (128-Kbps AAC) and content purchased from the iTunes Store (128-Kbps AAC). Video content was purchased from the iTunes Store. Battery tests are conducted with specific iPod units; actual results may vary. Rechargeable batteries have a limited number of charge cycles and may eventually need to be replaced (see www.apple.com/support/ipod/service/battery). Battery life and number of charge cycles vary by use and settings. See www.apple.com/batteries for more information.\niPod and iTunes are for legal or rightholder-authorized copying only. Don’t steal music.\nHelpful?\nYes\nNo\nCharacter limit:\n250\nMaximum character limit is 250.\nPlease don’t include any personal information in your comment.\nSubmit\nThanks for your feedback.",
      "source_url": "https://support.apple.com/en-ie/112320",
      "source_file": "apple_remaining_extraction/technical_specs_html/ipod-nano-4th-generation-tech-specs.html"
    }
  ],
  "record_notes": [
    "Archival-first-pass record; normalized specifications not inferred.",
    "Field extraction pass 2026-11-09: extracted explicit model-number/date, capacity and navigation data from the preserved official Apple identification text.",
    "Core technical fields transcribed from the archived model-specific Apple technical-specification page. Values remain source_transcribed pending record-level verification; no absent fields inferred."
  ],
  "normalized_specifications": {
    "navigation_interface": {
      "value": {
        "value": "Click Wheel",
        "unit": null,
        "source_section": "iPod nano (4th generation)",
        "verification_status": "source_transcribed",
        "notes": "Parsed from the preserved official Apple iPod identification text; wording retained."
      }
    },
    "model_number_dates": {
      "value": {
        "value": [
          {
            "model_number": "A1285",
            "introduced": "September 2008"
          }
        ],
        "unit": null,
        "source_section": "iPod nano (4th generation)",
        "verification_status": "source_transcribed",
        "notes": "Model number/date pairs preserved individually; repeated model numbers are not deduplicated in this evidence field."
      }
    },
    "capacity_statements": {
      "value": {
        "value": [
          "8 GB",
          "16 GB"
        ],
        "unit": null,
        "source_section": "Capacity",
        "verification_status": "source_transcribed",
        "notes": "Capacity statements parsed from the model-specific Apple technical-specification page and preserved in the matching Capacity section."
      }
    },
    "official_description": {
      "value": {
        "value": "You can distinguish the iPod nano (4th generation) from previous iPod nano models by:\nIts taller screen\nIts curved surface\nIts oval shape when seen from the top or bottom\nThe inclusion of an accelerometer that is used by the Shake feature.\nThe iPod nano (4th generation) comes in nine colours.",
        "unit": null,
        "source_section": "iPod nano (4th generation)",
        "verification_status": "source_transcribed",
        "notes": "Description transcribed from the official Apple identification page."
      }
    },
    "dimensions": {
      "height": {
        "value": 90.7,
        "unit": "mm",
        "source_section": "Size and weight",
        "verification_status": "source_transcribed"
      },
      "width": {
        "value": 38.7,
        "unit": "mm",
        "source_section": "Size and weight",
        "verification_status": "source_transcribed"
      },
      "depth": {
        "value": 6.2,
        "unit": "mm",
        "source_section": "Size and weight",
        "verification_status": "source_transcribed"
      },
      "weight": {
        "value": 36.8,
        "unit": "g",
        "source_section": "Size and weight",
        "verification_status": "source_transcribed"
      }
    },
    "storage": {
      "capacity": {
        "value": [
          8,
          16
        ],
        "unit": "GB",
        "source_section": "Capacity",
        "verification_status": "source_transcribed"
      },
      "medium": {
        "value": "flash drive",
        "unit": "type",
        "source_section": "Capacity",
        "verification_status": "source_transcribed"
      },
      "songs_at_128_kbps_aac": {
        "value": [
          2000,
          4000
        ],
        "unit": "songs",
        "source_section": "Capacity",
        "verification_status": "source_transcribed"
      },
      "photos": {
        "value": [
          7000,
          14000
        ],
        "unit": "photos",
        "source_section": "Capacity",
        "verification_status": "source_transcribed"
      },
      "video": {
        "value": [
          8,
          16
        ],
        "unit": "hours",
        "source_section": "Capacity",
        "verification_status": "source_transcribed"
      }
    },
    "display": {
      "technology": {
        "value": "Liquid crystal display with blue-white LED backlight",
        "unit": null,
        "source_section": "Display",
        "verification_status": "source_transcribed"
      },
      "diagonal": {
        "value": 2,
        "unit": "inches",
        "source_section": "Display",
        "verification_status": "source_transcribed"
      },
      "resolution": {
        "value": "320 × 240",
        "unit": "pixels",
        "source_section": "Display",
        "verification_status": "source_transcribed"
      },
      "pixel_density": {
        "value": 204,
        "unit": "ppi",
        "source_section": "Display",
        "verification_status": "source_transcribed"
      }
    },
    "audio": {
      "frequency_response": {
        "value": "20 Hz to 20,000 Hz",
        "unit": null,
        "source_section": "Audio",
        "verification_status": "source_transcribed"
      },
      "formats_supported": {
        "value": [
          "AAC (16 to 320 Kbps)",
          "Protected AAC (from iTunes Store)",
          "MP3 (16 to 320 Kbps)",
          "MP3 VBR",
          "Audible formats 2, 3 and 4",
          "Apple Lossless",
          "AIFF",
          "WAV"
        ],
        "unit": null,
        "source_section": "Audio",
        "verification_status": "source_transcribed"
      },
      "user_configurable_maximum_volume_limit": {
        "value": true,
        "unit": null,
        "source_section": "Audio",
        "verification_status": "source_transcribed"
      }
    },
    "headphones": {
      "frequency_response": {
        "value": "20 Hz to 20,000 Hz",
        "unit": null,
        "source_section": "Headphones",
        "verification_status": "source_transcribed"
      },
      "impedance": {
        "value": 32,
        "unit": "ohms",
        "source_section": "Headphones",
        "verification_status": "source_transcribed"
      }
    },
    "connectors": {
      "ports": {
        "value": [
          "Dock connector",
          "3.5-mm stereo headphone jack"
        ],
        "unit": null,
        "source_section": "Input and output",
        "verification_status": "source_transcribed"
      }
    },
    "controls": {
      "types": {
        "value": [
          "Hold switch",
          "Click Wheel"
        ],
        "unit": null,
        "source_section": "External buttons and controls",
        "verification_status": "source_transcribed"
      }
    },
    "battery": {
      "music_playback_time_max": {
        "value": 24,
        "unit": "hours",
        "source_section": "Battery and power 6",
        "verification_status": "source_transcribed"
      },
      "video_playback_time_max": {
        "value": 4,
        "unit": "hours",
        "source_section": "Battery and power 6",
        "verification_status": "source_transcribed"
      },
      "fast_charge_time": {
        "value": 1.5,
        "unit": "hours",
        "source_section": "Battery and power 6",
        "verification_status": "source_transcribed",
        "notes": "Source says fast charge to 80% of battery capacity."
      },
      "full_charge_time": {
        "value": 3,
        "unit": "hours",
        "source_section": "Battery and power 6",
        "verification_status": "source_transcribed"
      }
    },
    "system_requirements": {
      "mac_os_minimum": {
        "value": "Mac OS X v10.4.11 or later",
        "unit": null,
        "source_section": "Mac system requirements",
        "verification_status": "source_transcribed"
      },
      "itunes_mac_minimum": {
        "value": "iTunes 8 or later",
        "unit": null,
        "source_section": "Mac system requirements",
        "verification_status": "source_transcribed"
      },
      "windows_minimum": {
        "value": "Windows Vista or Windows XP Home/Professional with Service Pack 3",
        "unit": null,
        "source_section": "Windows system requirements",
        "verification_status": "source_transcribed"
      },
      "itunes_windows_minimum": {
        "value": "iTunes 8 or later",
        "unit": null,
        "source_section": "Windows system requirements",
        "verification_status": "source_transcribed"
      }
    },
    "environment": {
      "operating_temperature": {
        "value": "0° to 35° C",
        "unit": null,
        "source_section": "Environmental requirements",
        "verification_status": "source_transcribed"
      },
      "relative_humidity": {
        "value": "5% to 95% noncondensing",
        "unit": null,
        "source_section": "Environmental requirements",
        "verification_status": "source_transcribed"
      },
      "maximum_operating_altitude": {
        "value": 3000,
        "unit": "m",
        "source_section": "Environmental requirements",
        "verification_status": "source_transcribed"
      }
    },
    "video": {
      "formats_supported": {
        "value": "H.264 and MPEG-4; up to 640 × 480 at 30 fps; source lists profile, bitrate, audio and container constraints.",
        "unit": null,
        "source_section": "Video",
        "verification_status": "source_transcribed"
      }
    }
  }
}