Apple watches Ultra 2 — 49mm titanium Indigo Alpine loop M MRET3

Apple Watch Ultra 2 Tech Specs Apple Watch Ultra 2 49mm case Aerospace-grade titanium Dual speakers Three-microphone array with beamforming and wind noise mitigation Control: Customisable Action button Digital Crown with haptic feedback Side button Double tap gesture On-Device Siri Footnote ^ Display: Always-On Retina LTPO OLED display Flat sapphire crystal display Up to 3,000 nits maximum brightness 1 nit minimum brightness Chip: S9 SiP with 64-bit dual-core processor 4-core Apple Neural Engine 64GB capacity Sensors: Blood oxygen sensor and app Footnote 3 Electrical heart sensor and ECG app Footnote 4 Third-generation optical heart sensor High and low heart rate notifications Footnote 4 Irregular rhythm notifications Footnote 5 Sleep stages Temperature sensing Footnote 6 Depth gauge ±1m accuracy and app Water temperature sensor Compass with Waypoints and Backtrack Always-on altimeter High-g accelerometer High dynamic range gyroscope Ambient light sensor Safety: Emergency SOS Footnote 8 International emergency calling Footnote 10 Siren Crash Detection Footnote 8 Fall Detection Footnote 8 Splash, Water and Dust: Water resistance 100m (swimproof) Footnote 12 Dust Resistance IP6X Footnote 19 EN13319 recreational scuba diving to 40m Footnote 12 Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration Footnote 20 Connectivity and Communication: Precision dual-frequency GPS: GPS, GNSS, Galileo and BeiDou LTE and UMTS Footnote 13 Wi-Fi 4 (802.11n) Bluetooth 5.3 Second-generation Ultra Wideband chip Footnote 21 Apple Pay GymKit Power and Battery Life: Built-in rechargeable lithium-ion battery Up to 36 hours normal use Footnote 18 Up to 72 hours in Low Power Mode Footnote 18 USB-C magnetic fast-charging cable Environmental Requirements: On-wrist operating temperature: −20°C to 55°C (−4°F to 130°F) Operational temperature: 0°C to 35°C (32°F to 95°F) Non-operational storage temperature: −20°C to 45°C (4°F to 113°F) Dive operating temperature: 0°C to 40°C (32°F to 104°F) Relative humidity: 5% to 90% non‑condensing Operating Altitude: -500 m to 9,000 m (-1,600 feet to 29,500 feet) Dimensions Height: 49mm Width: 44mm Depth: 14.4mm Case Weight: 61.4g