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| Colors | Galaxy Watch Ultra 2 47mm: Titanium Silver, Titanium Gray | Galaxy Watch 9 44mm: Graphite, Silver 40mm: Graphite, Cream |
| Dimensions \& Weight | Galaxy Watch Ultra 2 47mm: 47.4 x 47.1 x 10.7mm (61.5g) | Galaxy Watch 9 44mm: 46.0 x 43.7 x 8.6mm (34.0g) 40mm: 42.7 x 40.4 x 8.6mm (31.5g) |
| Display | Galaxy Watch Ultra 2 Sapphire Crystal 47 mm: 1.52 inches (38.5 mm), 498 x 498 pixels Super AMOLED, full color always on display, up to 5000 nits | Galaxy Watch 9 Sapphire Crystal 44 mm: 1.47 inches (480 x 480 pixels) 40 mm: 1.34 inches (438 x 438 pixels) Super AMOLED, Full Color Always On Display, up to 3000 nits |
| Processor | Galaxy Watch Ultra 2 Qualcomm SDW6100 (penta core, 3 nm) | Galaxy Watch 9 Qualcomm SDW6100 (penta core, 3 nm) |
| RAM \& Storage | Galaxy Watch Ultra 2 2 GB + 64 GB | Galaxy Watch 9 2 GB + 32 GB |
| Battery | Galaxy Watch Ultra 2 800 mAh | Galaxy Watch 9 44 mm: 445 mAh 40 mm: 390 mAh |
| Charging | Galaxy Watch Ultra 2 High-Frequency Fast Charging (WPC-based wireless charging) | Galaxy Watch 9 Fast Charging (WPC-based wireless charging) |
| Operating System | Galaxy Watch Ultra 2 Wear OS Powered by Samsung (Wear OS 7) | Galaxy Watch 9 Wear OS Powered by Samsung (Wear OS 7) |
| User interface | Galaxy Watch Ultra 2 One UI 9 Watch | Galaxy Watch 9 One UI 9 Watch |
| Sensors | Galaxy Watch Ultra 2 Samsung BioActive Sensor (optical biosignal sensor + electrical heart signal + bioelectrical impedance analysis), temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor, light sensor | Galaxy Watch 9 Samsung BioActive Sensor (optical biosignal sensor + electrical heart signal + bioelectrical impedance analysis), temperature sensor, accelerometer, barometer, gyroscope, geomagnetic sensor, light sensor |
| Connectivity | Galaxy Watch Ultra 2 LTE, Bluetooth 6.0, Wi-Fi 2.4GHz + 5GHz, NFC, L1+L5 dual-frequency GPS | Galaxy Watch 9 LTE, Bluetooth 6.0, Wi-Fi 2.4GHz + 5GHz, NFC, L1+L5 dual-frequency GPS |
| Robustness \& Waterproofing | Galaxy Watch Ultra 2 10ATM+ / IP69K / MIL-STD-810H / EN13319 | Galaxy Watch 9 5ATM+ / IP68 / MIL-STD-810H |
| Compatibility | Galaxy Watch Ultra 2 Android 13.0 or higher with more than 1.5 GB of RAM | Galaxy Watch 9 Android 13.0 or higher with more than 1.5 GB of RAM |