Apple Watch Ultra 4: A3579; 49 mm natural titanium; translucent gray Ocean Band
Samsung Galaxy Watch5 (40 mm, Bluetooth): The 40 mm aluminium Bluetooth version of the Galaxy Watch5, in Graphite, Pink Gold and Silver. The 44 mm version has a larger screen and battery; the titanium Galaxy Watch5 Pro is a separate model.
| Specification | Apple Watch Ultra 4 | Samsung Galaxy Watch5 (40 mm, Bluetooth) |
|---|---|---|
| Release year | 2026 | 2022 |
| 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 | — |
| Display | LTPO3 OLED; 422 × 514 Apple | 1.2-inch (30.4 mm) Super AMOLED, 396 × 396 pixels; full-colour Always On Display; sapphire crystal Samsung |
| Brightness | 1 nit minimum; 3000 nits peak Apple | — |
| Chip | S11; dual-core 64-bit Apple | — |
| Storage | 64 GB 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 | — |
| Case and colours | — | Armor Aluminum case with Sport Band; Graphite, Pink Gold, Silver Samsung |
| Size and weight | — | 39.3 × 40.4 × 9.8 mm; 28.7 g (without strap) Samsung |
| Processor | — | Exynos W920, dual-core 1.18 GHz Samsung |
| Memory and storage | — | 1.5 GB RAM; 16 GB internal storage Samsung |
| Battery and charging | — | 284 mAh (typical); faster WPC-based wireless charging Samsung |
| Software | — | At launch Wear OS Powered by Samsung (Wear OS 3.5) with One UI Watch 4.5 Samsung |
| Sensors | — | Samsung BioActive Sensor (optical heart rate, electrical heart signal, bioelectrical impedance analysis); temperature sensor; accelerometer, barometer, gyro, geomagnetic and light sensors Samsung |
| Connectivity | — | Bluetooth 5.2; Wi‑Fi 802.11 a/b/g/n 2.4 + 5 GHz; NFC; GPS/GLONASS/BeiDou/Galileo Samsung |
| Durability | — | 5ATM + IP68; MIL-STD-810H Samsung |