Apple Watch Ultra 4: A3579; 49 mm natural titanium; translucent gray Ocean Band
Samsung Galaxy Watch9 (44 mm Bluetooth): SM-L350NZKAEUB; Graphite; Bluetooth, not LTE
| Specification | Apple Watch Ultra 4 | Samsung Galaxy Watch9 (44 mm Bluetooth) |
|---|---|---|
| Release year | 2026 | 2026 |
| 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 | 1.5-inch Super AMOLED; 480 × 480 Samsung |
| Brightness | 1 nit minimum; 3000 nits peak Apple | — |
| Chip | S11; dual-core 64-bit Apple | — |
| Storage | 64 GB Apple | 32 GB; 20.1 GB available Samsung |
| Health sensors | Electrical/optical heart; blood oxygen; temperature Apple | — |
| Outdoor sensors | Depth, water temperature, compass, altimeter Apple | — |
| Positioning | Precision dual-frequency GNSS Apple | GPS, GLONASS, BeiDou, Galileo, QZSS Samsung |
| 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 | — |
| Availability year | — | 2026 Samsung |
| Processor | — | Snapdragon Wear Elite; 5 cores Samsung |
| Memory | — | 2 GB RAM Samsung |
| Battery | — | 445 mAh typical; non-removable Samsung |
| Manufacturer endurance | — | Up to 40 hours AOD off / 30 on Samsung |
| Size / weight | — | 46 × 43.7 × 8.6 mm; case 34 g Samsung |
| Bluetooth | — | 6.0 Samsung |
| Wi-Fi | — | 802.11a/b/g/n; 2.4 / 5 GHz Samsung |
| Other connectivity | — | NFC; no cellular connection on this model Samsung |
| Sensors | — | Optical/electrical heart, BIA, temperature, barometer, compass Samsung |
| Operating system | — | Wear OS Samsung |
| Charging compatibility | — | Model-compatible wireless charging; no Wireless PowerShare Samsung |
| Resistance | — | 5 ATM; IPX8 / IP6X tests Samsung |
| Setup | — | Galaxy Wearable; Android phone supporting Google services Samsung |