Apple Watch Series 12: 42 / 46 mm · Case material options
Apple Watch Ultra 4: A3579; 49 mm natural titanium; translucent gray Ocean Band
| Specification | Apple Watch Series 12 | Apple Watch Ultra 4 |
|---|---|---|
| Release year | 2026 | 2026 |
| Processor | S11; 64-bit dual-core; 4-core Neural Engine Apple | — |
| Storage | 64 GB Apple | 64 GB Apple |
| Display | Always-On Retina LTPO3 OLED; 326 ppi; 2000 nits peak, 1 nit minimum; 46 mm: 416 × 496; 42 mm: 374 × 446 Apple | LTPO3 OLED; 422 × 514 Apple |
| Cover glass | Aluminium: Ceramic Shield 2; titanium/ceramic: sapphire Apple | — |
| Case and material | 42 / 46 mm; aluminium, titanium or ceramic Apple | — |
| Rated battery life | Up to 24 hours normal use; up to 38 hours Low Power Mode; up to 10 hours workout tracking Apple | — |
| Rated charging time | About 80% in 30 minutes; 15 minutes gives up to 12 hours of normal use Apple | — |
| Sensors | Second-generation electrical and always-on optical heart sensors; blood oxygen; temperature; compass; always-on altimeter; high-g accelerometer; depth gauge to 6 m; water temperature Apple | — |
| Health features | ECG; irregular rhythm and high/low heart rate notifications; hypertension and sleep apnoea notifications; sleep score; Vitals; Readiness Apple | — |
| Weight | 46 mm aluminium GPS 39.5 g; titanium 44.9 g; 42 mm aluminium GPS 32.2 g; titanium 36.5 g Apple | Natural titanium case 63 g Apple |
| Durability | 50 m water resistance (ISO 22810:2010); IP6X dust Apple | — |
| Connectivity | Wi-Fi 4 (2.4 and 5 GHz); Bluetooth 5.3; second-generation UWB; multi-constellation GPS; RedCap 5G on cellular models Apple | — |
| Compatibility | watchOS 27; iPhone 11 or later (including iPhone SE 2nd generation or later) running iOS 27 Apple | — |
| Announcement / availability | — | 9 / 18 September 2026 Apple |
| Case | — | Grade 5 titanium; sapphire front crystal Apple |
| Size | — | 49 × 44 × 12 mm Apple |
| Brightness | — | 1 nit minimum; 3000 nits peak Apple |
| Chip | — | S11; dual-core 64-bit Apple |
| Health sensors | — | Electrical/optical heart; blood oxygen; temperature Apple |
| Outdoor sensors | — | Depth, water temperature, compass, altimeter Apple |
| Positioning | — | Precision dual-frequency GNSS Apple |
| Wireless | — | Wi-Fi 4, 2.4/5 GHz; Bluetooth 5.3; UWB Apple |
| Cellular | — | A3579: 5G RedCap and LTE Apple |
| Manufacturer battery test | — | Up to 50 hours normal use; 84 in Low Power Mode Apple |
| Charging | — | About 45 minutes to 80% Apple |
| Water / dust | — | 100 m rating; IP6X Apple |
| Diving limit | — | Recreational diving to 40 m Apple |
| Phone compatibility | — | iPhone 11 / SE 2 or later; iOS 27+ Apple |