Description
| Specification | Details |
|---|---|
| Material and Finish |  Starlight            Midnight |
| Size and Weight – 44mm |  Height: 44mm Width: 38mm Depth: 10.7mm Resolution: 368 × 448 pixels Display Area: 977mm² Weight (GPS): 32.9g Weight (GPS + Cellular): 33.0g Wrist Fit: 140–245mm |
| Size and Weight – 40mm |  Height: 40mm Width: 34mm Depth: 10.7mm Resolution: 324 × 394 pixels Display Area: 759mm² Weight (GPS): 26.3g Weight (GPS + Cellular): 26.4g Wrist Fit: 130–200mm |
| Hardware and Buttons |  |
| Controls | Digital Crown with haptic feedback Side button Double tap and wrist flick gestures |
| Chip |  S10 chip with 64-bit dual-core processor4-core Neural Engine 64GB capacity |
| Sensors | Second-generation optical heart sensor Temperature sensor Compass Always-on altimeter High-g accelerometer High dynamic range gyroscope Ambient light sensor |
| Health and Wellness | Cycle Tracking app with retrospective ovulation estimates Heart Rate app High and low heart rate notifications Irregular rhythm notifications Medications app Mindfulness app Noise app Sleep app including sleep stages Sleep score |
| Display | Always-On Retina display with OLED and LTPO Tough Ion-X front glass with 4× crack resistance Up to 1,000 nits peak brightness2 nits minimum brightness326 pixels per inch |
| Audio | Speaker Microphone Media playback |
| Power and Battery Life | All-day battery life, up to 18 hours of normal use Up to 32 hours in Low Power Mode Built-in rechargeable lithium-ion battery Fast-charge capable Up to 80% charge in about 45 minutes15 minutes for up to 8 hours of normal use8 minutes for up to 8 hours of sleep tracking |
| Operating System | watchOS — Operating system with apps and features designed to keep you active, healthy, safe, and connected. |
