Apple Watch Ultra 4: A3579; 49 mm natural titanium; translucent gray Ocean Band
Garmin Venu 4 (45 mm): 010-03014-00 · Slate case / black silicone band
| Specification | Apple Watch Ultra 4 | Garmin Venu 4 (45 mm) |
|---|---|---|
| Release year | 2026 | 2025 |
| Announcement / availability | 9 / 18 September 2026 Apple | — |
| Case | Grade 5 titanium; sapphire front crystal Apple | — |
| Size | 49 × 44 × 12 mm Apple | — |
| Weight | Natural titanium case 63 g Apple | 38 g case; 56 g with silicone band Garmin |
| Display | LTPO3 OLED; 422 × 514 Apple | 1.4-inch AMOLED; 454 × 454; touch, optional always-on mode Garmin |
| Brightness | 1 nit minimum; 3000 nits peak Apple | — |
| Chip | S11; dual-core 64-bit Apple | — |
| Storage | 64 GB Apple | 8 GB; music storage Garmin |
| Health sensors | Electrical/optical heart; blood oxygen; temperature Apple | — |
| Outdoor sensors | Depth, water temperature, compass, altimeter Apple | — |
| Positioning | Precision dual-frequency GNSS Apple | Multi-GNSS, multi-band GPS and SatIQ automatic selection Garmin |
| 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 | — |
| Launch | — | Announced 17 September 2025; sales began 22 September 2025 Garmin |
| Cover glass | — | Corning Gorilla Glass 3 Garmin |
| Case and band | — | Stainless steel / fibre-reinforced polymer; 22 mm quick-release band Garmin |
| Battery | — | Up to 12 days in smartwatch mode; 20 hours GPS-only; 17 hours multi-band Garmin |
| Always-on display | — | Up to 4 days, according to Garmin Garmin |
| Water resistance | — | 5 ATM; suitable for swimming Garmin |
| Connectivity and calls | — | Bluetooth, ANT+, Wi-Fi; speaker / microphone, paired compatible phone required for calls Garmin |
| Health and training | — | Heart rate, HRV, sleep, skin temperature; training readiness and recovery tracking Garmin |
| Software 18.32 | — | Includes fixes for resets when changing screens during activities and Spotify playback after skipping tracks with Bluetooth headphones Garmin |