{
  "schema_version": "2.0",
  "product": {
    "brand": "Apple",
    "category": "smartwatch",
    "family": "Apple Watch Ultra",
    "model": "Apple Watch Ultra 4",
    "model_slug": "apple-watch-ultra-4",
    "model_year": 2026,
    "year_introduced": 2026
  },
  "source": {
    "source_type": "manufacturer",
    "source_url": "https://www.apple.com/apple-watch-ultra-4/specs/",
    "source_file": "apple_watch_extraction/technical_specs_html/apple-watch-ultra-4.html",
    "source_title": "Apple Watch Ultra 4 - Technical Specifications - Apple",
    "publisher": "Apple",
    "published_at": null,
    "checked_at": "2026-11-09",
    "verification_status": "content_verified",
    "verification_notes": "Official Apple page captured 2026-11-09; page identity matched Apple Watch Ultra 4; 20 source sections extracted and archived at apple_watch_extraction/technical_specs_html/apple-watch-ultra-4.html.",
    "notes": []
  },
  "extraction": {
    "method": "section_preserving",
    "normalization_status": "archival_first_pass",
    "note": "Apple's original section headings and visible source text are retained in source order from captured official HTML. No normalized values or missing specifications have been inferred.",
    "extracted_at": "2026-11-09",
    "reviewed_at": null
  },
  "sections": [
    {
      "heading": "Material and Finish",
      "source_text": "Titanium case, Grade 5\nNatural, Black"
    },
    {
      "heading": "Size and Weight",
      "source_text": "Height:\n49mm\nWidth:\n44mm\nDepth:\n12mm\n422 by 514 pixels\n1245 sq mm display area\nWeight (natural):\n63.0 grams\nWeight (black):\n63.1 grams\nFits 130–210mm wrists"
    },
    {
      "heading": "Hardware and Buttons",
      "source_text": "Microphone\nSpeaker\nHealth Sensing System\nCustomizable Action button\nSiren/Speaker\nAntennas (GPS, cellular/satellite)\nMicrophone\nSide button\nMicrophone\nDigital Crown\nDepth gauge/Water temperature sensor/Altimeter\n1\n2\n3\n4\n5\n6\n7\n8\n9\n10\n11"
    },
    {
      "heading": "Controls",
      "source_text": "Customizable Action button\nDigital Crown with haptic feedback\nSide button\nSingle tap, double tap, and wrist flick gestures\nSiri powered by Apple Intelligence\n1"
    },
    {
      "heading": "Chip",
      "source_text": "S11 chip with 64-bit dual-core processor\nAudio Intelligence (Live Rewind, Siri Recap, Shazam, Sound Recognition)\n2\n4-core Neural Engine\n64GB capacity"
    },
    {
      "heading": "Apple Intelligence and Siri AI 1",
      "source_text": "The next generation of Apple Intelligence is centered around you, integrated into your apps, and built with privacy. Apple Intelligence powers Siri AI — an entirely new version of Siri that’s more personal, conversational, and powerful, along with helpful features across apps.\nLearn more"
    },
    {
      "heading": "Sensors",
      "source_text": "Health Sensing System: second‑generation electrical heart sensor, always‑on optical heart sensor, blood oxygen sensor,\n3\nand temperature sensor\n4\nDepth gauge\nWater temperature sensor\nCompass\nAlways‑on altimeter\nHigh‑g accelerometer\nHigh dynamic range gyroscope\nAmbient light sensor"
    },
    {
      "heading": "Health and Wellness",
      "source_text": "Readiness app\nVitals app with heart rate, respiratory rate, wrist temperature, sleep duration, and heart rate variability (HRV)\n5\nBlood Oxygen app\n3\nECG app\n6\nHeart Rate app\nHigh and low heart rate notifications\nRecovery HRV\nHigh‑frequency background heart rate tracking\nIrregular rhythm notifications\n7\nAdvanced Cycle Tracking app with fertile window estimates, retrospective ovulation estimates, and perimenopause and menopause support\n8\nMedications app\n9\nMindfulness app with state of mind tracking\nNoise app\nSleep app including sleep stages\nSleep score\nSleep apnea notifications\n10\nHypertension notifications\n11"
    },
    {
      "heading": "Display",
      "source_text": "Always‑On Retina display with wide‑angle OLEDs and LTPO3\n1Hz refresh\nActive area 422 by 514 pixels, 326 pixels per inch\nFlat sapphire crystal display\n3000 nits peak brightness\n1 nit minimum brightness\nNight Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering)"
    },
    {
      "heading": "Audio",
      "source_text": "Three-microphone array with beamforming and wind noise mitigation\nDual speakers\nMedia playback\nSiren"
    },
    {
      "heading": "Power and Battery Life",
      "source_text": "Multiday battery life, up to 50 hours of normal use\n12\nUp to 84 hours in Low Power Mode\n12\nUp to 18 hours workout tracking\n13\nUp to 25 hours Extended Workout tracking\n13\nUp to 45 hours Max Extended Workout tracking\n13\nBuilt‑in rechargeable lithium‑ion battery\nFast‑charge capable\n14\nUp to 80% charge in about 45 minutes\n14\n15 minutes for up to 18 hours of normal use\n15\n5 minutes for up to 10 hours of sleep tracking\n15\nLearn more"
    },
    {
      "heading": "Operating System",
      "source_text": "watchOS\nwatchOS is the world’s most advanced wearable operating system, with apps and features designed to keep you active, healthy, safe, and connected."
    },
    {
      "heading": "Workouts and Activity",
      "source_text": "Running\nCustom workouts\nCustomizable Workout Views\nTraining Load / Workout Effort Tracking\nHeart Rate Zones (customizable)\nPostworkout heart rate\nVO\n2\nmax\nRace Route\nPacer\nPrecision Start using Action button\nCadence, Stride Length, Ground Contact Time, Vertical Oscillation, and Running Power\nAutomatic track detection\nMultisport workout\nHeart Rate Zone, pace, and target alerts\nHiking\nCompass with bearing, incline, elevation, and coordinates\nCustom waypoints\nAutomatically generated waypoints to cellular connectivity\nBacktrack GPS data\nOffline maps with custom route creation\n16\nElevation alerts\nTopographic maps for thousands of national and regional parks (U.S. only)\nHundreds of curated hikes across all 63 U.S. national parks\nSiren\nCycling\nCustom workouts\nCustomizable Workout Views\nTraining Load / Workout Effort Tracking\nAverage speed, elevation gained, and distance\nBluetooth-compatible with power meters\nFunctional Threshold Power (with power meter connection)\nLive Activity on iPhone\nHeart Rate Zones (customizable)\nCadence (rpm), speed (mph), power (watts), power zones (with power meter connection)\nPostworkout heart rate\nSwimming\nCustom workouts (pool swim) with haptics to cue the next interval\nCustomizable Workout Views (pool swim, open water swim)\nSplits and auto sets\nSWOLF score\nAutomatic stroke and count detection (including kickboard)\nWater temperature\nAverage pace, total distance, heart rate, and laps\nDiving\nRecreational dive to 40m\nDive computer app (available on the App Store)\n17\nAutomatic launch at 1m\nCurrent and maximum depth duration\nGPS entry and exit points\nDepth gauge\nWater temperature sensor\nMore Workouts\nSkiing\nSnowboarding\nOutdoor Rowing\nPaddling\nGolf\nWalk\nElliptical\nRower\nStair Stepper\nHIIT\nYoga\nFunctional Strength Training\nDance\nCooldown\nCore Training\nPilates\nTai Chi\nWheelchair\nKickboxing\nMultisport\nand more"
    },
    {
      "heading": "Safety",
      "source_text": "Satellite communications (Emergency SOS, Messages, Find My)\n18\nEmergency SOS\n19\nInternational emergency calling\n20\nSiren\nFlashlight\nFall Detection\n19\nCrash Detection\n19\nLast Emergency Call Availability Waypoint\nNoise monitoring\nBacktrack\nCheck In"
    },
    {
      "heading": "Durability",
      "source_text": "Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:2010\n21\nDust resistance IP6X under IEC 60529\n22\nEN13319 recreational scuba diving to 40m (±1m accuracy)\nTested to MIL-STD 810H against subsections for altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration"
    },
    {
      "heading": "Connectivity",
      "source_text": "All models\nSupport for 2.4GHz and 5GHz Wi‑Fi networks\nWi‑Fi 4 (802.11n)\nBluetooth 5.3\nPrecision dual‑frequency GPS (GPS, Galileo, QZSS, and BeiDou)\nSecond‑generation Ultra Wideband chip\n23\nApple Pay\n24\nGymKit\nModel A3579\nSupports RedCap for 5G\n25\nand LTE\n26\nFDD‑5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71)\nTDD‑5G NR (Bands n38, n40, n41, n53)\nFDD‑LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 66, 71)\nTDD‑LTE (Bands 38, 39, 40, 41, 53)\nSupport for Apple Watch For Your Kids\n27\nInternational roaming\n28"
    },
    {
      "heading": "Accessibility",
      "source_text": "Built‑in accessibility features supporting vision, mobility, hearing, and cognitive disabilities.\nLearn more\nFeatures include:\nVoiceOver\nZoom\nOn/Off Labels\nReduce Transparency\nIncrease Contrast\nColor Filters\nText Size\nBold Text\nReduce Motion\nHourly Chimes\nAssistiveTouch\nButton Click Speed\nTouch Accommodations\nAuto‑Answer Calls\nType to Siri\nRTT Support\nAudio Volume Balance\nAudio Transcription\nLive Speech\nAccessibility Shortcut\nMono Audio\nTaptic Time\nPersonal Voice\nLive Listen\nSound Recognition"
    },
    {
      "heading": "Environmental Requirements",
      "source_text": "On-wrist operating temperature:\n–4° to 130° F (–20° to 55° C)\nOperating temperature:\n32° to 95° F (0° to 35° C)\nNon-operating storage temperature:\n–4° to 113° F (–20° to 45° C)\nDive operating temperature:\n32° to 104° F (0° to 40° C)\nRelative humidity:\n5% to 90% noncondensing\nOperating altitude:\n–1600 feet to 29,500 feet (–500m to 9000m)"
    },
    {
      "heading": "Compatibility",
      "source_text": "iPhone 11 or later, including iPhone SE (2nd generation or later), with iOS 27 or later"
    },
    {
      "heading": "In the Box",
      "source_text": "Apple Watch Ultra 4\nBand\nApple Watch Magnetic Fast Charger to USB‑C Cable (1m)"
    }
  ],
  "record_notes": [
    "Archival-first-pass record generated from captured official Apple technical-specification HTML.",
    "Original Apple section headings and visible source text are retained. No normalized specifications have been inferred.",
    "Case size, finish and GPS/cellular configurations remain within this model record unless later evidence establishes a meaningful separate product."
  ]
}