Compare Samsung Galaxy Watch 4 40mm
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| Dimensions | 40.4 x 39.3 x 9.8 mm | 39.3 x 40.4 x 9.8 mm | 45.4 x 45.4 x 10.5 mm | 40.5 x 40.5 x 11.2 mm |
| Weight | 25.9 grams | 26.6 grams | 46.5 grams | not yet known |
| Stand-by | depends on usage | depends on usage | depends on usage | depends on usage |
| Talk time | depends on usage | depends on usage | depends on usage | depends on usage |
| Watch | ||||
| Directional key | ||||
| Touchscreen | Capacitive | Capacitive | Capacitive | |
| Voice command | ||||
| Wear OS | 3.5 | |||
| One UI Watch | 5.0 | 4.5 | ||
| Color display | Adjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On feature | Adjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On feature | Adjustable display brightness, 16.777.216 colors (24 bits), Circular Super AMOLED, Always On feature | AMOLED |
| 1.2 inch | 1.2 inch | 1.4 inch | 1.34 inch |
| 396 x 396 pixels | 396 x 396 pixels | 450 x 450 pixels | 300 x 300 pixels |
| 1:1 | 1:1 | 1:1 | 1:1 |
| 467 | 467 | 455 | 317 |
| 29.3% | 29.3% | 30.7% | 35.3% |
| Integrated antenna | ||||
| Processor | Samsung Exynos W920, Dual Core | Samsung Exynos W920, Dual Core | Samsung Exynos W920, Dual Core | |
| 1.18 GHz | 1.18 GHz | 1.18 GHz | |
| Aluminium | ||||
| Dust and waterproof | IP68, 5 ATM | IP68, 5 ATM | IP68, 5 ATM | 5 ATM |
| Gorilla Glass | DX+ | DX+ | ||
| Rugged housing | MIL-STD-810G | MIL-STD-810G | MIL-STD-810H | |
| Sapphire Crystal | ||||
| Titanium | ||||
| Agenda | ||||
| Alarm clock | ||||
| Date and time notation | ||||
| Stopwatch & countdown timer | ||||
| Reminder list | ||||
| Pedometer | ||||
| Instant messaging | ||||
| MMS | ||||
| SMS | ||||
| A-GPS | ||||
| Beidou | ||||
| Galileo | ||||
| GLONASS | ||||
| GPS receiver | ||||
| Digital Compass | ||||
| Internal memory | ||||
| 1.5 GB | 1.5 GB | 1.5 GB | |
| 16 GB | 16 GB | 16 GB | 4 GB |
| Bluetooth | v5.0 | v5.3 | v5.2 | v5.0 |
| NFC | ||||
| Wireless Lan (WLAN/Wi-Fi) | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) | |
| Battery | Li-poly | |||
| 247 mAh | 247 mAh | 590 mAh | |
| Wireless charging | ||||
| Ambient light sensor | ||||
| Barometer | ||||
| Gesture recognition | ||||
| Gyroscope | ||||
| Heart rate monitor | ||||
| Oxygen saturation (SpO2) | ||||
| Thermometer | ||||
| Altimeter | ||||
| With Android | Vanaf 6.0 | Vanaf 11.0 | Vanaf 8.0 | Vanaf 10.0 |
| With iOS | Vanaf 13.4 | |||
| eSIM | ||||
| Flight mode | ||||
| Vibrating alert | ||||
| 4G (LTE) | ||||
| Microphone | ||||
