Apple Watch Ultra 4 Alpine Loop

Design & Physical Dimensions Material & Finish Titanium case, Grade 5 | Colors: Natural, Black Dimensions (H x W x D) 49mm x 44mm x 12mm Weight 63.0 grams (Natural) | 63.1 grams (Black) Wrist Size Fits 130–210mm wrists Durability Water resistance 100m (swim, snorkel, scuba, high-speed water sports) under ISO standard 22810:2010 Dust resistance IP6X under IEC 60529 EN13319 recreational scuba diving to 40m (±1m accuracy) Tested to MIL-STD 810H (altitude, extreme temperatures, temperature shock, immersion, freeze/thaw, shock, vibration) Display System Display Type Always-On Retina display with wide-angle OLEDs and LTPO3 | Flat sapphire crystal display Resolution & Area 422 by 514 pixels, 326 pixels per inch | 1245 sq mm display area Brightness 3000 nits peak brightness | 1 nit minimum brightness Display Features 1Hz refresh | Night Mode for Apple Watch Ultra faces (Modular Ultra, Wayfinder, Orienteering) Processor, OS & Storage Operating System watchOS Chipset S11 chip with 64-bit dual-core processor 4-core Neural Engine Apple Intelligence Siri powered by Apple Intelligence (Siri AI) Storage Capacity 64GB Sensors & Health Sensors Second-generation electrical heart sensor & always-on optical heart sensor Blood oxygen sensor | Temperature sensor Depth gauge & Water temperature sensor Compass & Always-on altimeter High-g accelerometer & High dynamic range gyroscope Ambient light sensor Health & Wellness Readiness app, Vitals app, Blood Oxygen app, ECG app, High/low/irregular heart rate notifications, Advanced Cycle Tracking, Sleep apnea notifications, Medications app, Mindfulness, Noise app, Sleep tracking Safety Features Emergency SOS, International emergency calling, Siren, Fall Detection, Crash Detection, Backtrack, Check In Controls & Audio Inputs & Controls Customizable Action button Digital Crown with haptic feedback Side button Gestures: Single tap, double tap, and wrist flick Audio System Dual speakers | Siren | Three-microphone array with beamforming and wind noise mitigation Network & Connectivity Wireless & Location Wi-Fi: Support for 2.4GHz and 5GHz Wi-Fi networks | Wi-Fi 4 (802.11n) Bluetooth: Bluetooth 5.3 Location: Precision dual-frequency GPS (GPS, Galileo, QZSS, and BeiDou) UWB: Second-generation Ultra Wideband chip Cellular (Model A3579) Supports RedCap for 5G and LTE FDD-5G NR: Bands n1, n2, n3, n5, n7, n8, n12, n14, n20, n25, n26, n28, n66, n71 TDD-5G NR: Bands n38, n40, n41, n53 FDD-LTE / TDD-LTE: Various global bands supported Additional Support Apple Pay | GymKit | Support for Apple Watch For Your Kids Battery & Power Battery Life Normal Use: Up to 50 hours Low Power Mode: Up to 84 hours Outdoor Workout: Up to 18 hours Extended Workout: Up to 25 hours (Max Extended: 45 hours) Charging Fast-charge capable Up to 80% charge in about 45 minutes 15 minutes for up to 18 hours of normal use