Apple Watch Ultra 2
- 49mm case
 - Aerospace grade titanium
 - Dual speakers
 - Three-microphone array with beamforming and wind noise mitigation
 - Customizable Action button
 - Digital Crown with haptic feedback
 - Side button
 - Double tap gesture^
 - On-Device Siri^
 - Always-On Retina LTPO OLED display
 - Flat sapphire crystal display
 - Up to 3000 nits maximum brightness
 - 1 nit minimum brightness
 - S9 SiP with 64-bit dual-core processor
 - 4-core Apple Neural Engine
 - 64GB capacity
 - Blood oxygen sensor and app
 - Electrical heart sensor and ECG app
 - Third-generation optical heart sensor
 - High and low heart rate notifications
 - Irregular rhythm notifications
 - Sleep stages
 - Temperature sensing
 - Depth gauge ±1m accuracy
 - Water temperature sensor
 - Compass
 - Always-on altimeter
 - High-g accelerometer
 - Up to 256 g-forces with Fall Detection and Crash Detection
 - High dynamic range gyroscope
 - Ambient light sensor
 - Emergency SOS
 - International emergency calling
 - Siren
 - Crash Detection
 - Fall Detection
 - Water resistance 100m (swim proof)
 - Dust resistance IP6X
 - EN13319 recreational scuba diving to 40m
 - Tested to MIL-STD 810H: altitude, high temperature, low temperature, temperature shock, immersion, freeze with thaw, ice and freezing rain, and shock and vibration.
 - Precision dual-frequency GPS: GPS, GNSS, Galileo, and BeiDou
 - LTE and UMTS
 - Wi-Fi 4 (802.11n)
 - Bluetooth 5.3
 - Second-generation Ultra Wideband chip
 - Apple Pay
 - GymKit
 - Built-in rechargeable lithium-ion battery
 - Up to 36 hours
 - Up to 72 hours in Low Power Mode
 - USB-C magnetic fast charging cable
 - On-wrist operating temperature: -4° F to 130° F (-20° C to 55° C)
 - Operational temperature: 32°F to 95°F (0°C to 35°C)
 - Nonoperational storage temperature: 4°F to 113°F (-20° to 45°C)
 - Dive operating temperature: 32°F to 104°F (0°C to 40°C)
 - Relative humidity: 5% to 90% noncondensing
 - Operating Altitude: -1600 feet to 29,500 feet (-500 m to 9000 m)
 
| Brand | Apple |