Apple Watch Ultra 4: A3579; 49 mm natural titanium; translucent gray Ocean Band
Samsung Galaxy Watch8 Classic (46 mm, Bluetooth): SM-L500 · 46 mm Bluetooth; the LTE version SM-L505 is a separate model; black or white
| Specification | Apple Watch Ultra 4 | Samsung Galaxy Watch8 Classic (46 mm, Bluetooth) |
|---|---|---|
| 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 | 63.5 g (without band) Samsung |
| Display | LTPO3 OLED; 422 × 514 Apple | 1.34-inch Super AMOLED, 438 × 438, full-colour Always-On; 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 size | — | 46 mm; 46.4 × 46 × 10.6 mm (excluding health sensors) Samsung |
| Controls | — | Rotating bezel, Quick Button Samsung |
| Processor | — | Exynos W1000; 5 cores, 3 nm Samsung |
| Memory and storage | — | 2 GB RAM, 64 GB storage Samsung |
| Battery | — | 445 mAh (typical); fast charging, WPC-based wireless charging Samsung |
| Operating system | — | Wear OS Powered by Samsung (Wear OS 6), One UI 8 Watch Samsung |
| Sensors | — | BioActive sensor (optical heart rate, electrical heart signal, bioelectrical impedance), temperature, accelerometer, barometer, gyro, geomagnetic, light sensor, 3D Hall sensor Samsung |
| Location | — | L1 + L5 dual-frequency GPS; GPS, GLONASS, BeiDou, Galileo Samsung |
| Connectivity | — | Bluetooth 5.3, Wi-Fi 2.4 and 5 GHz, NFC; no LTE on this model Samsung |
| Durability | — | 5ATM, IP68, MIL-STD-810H Samsung |
| Colours | — | Black, white Samsung |