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 |
| Weight | 25.9 grams | 26.6 grams | 46.5 grams |
| Stand-by | depends on usage | depends on usage | depends on usage |
| Talk time | 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 |
| 1.2 inch | 1.2 inch | 1.4 inch |
| 396 x 396 pixels | 396 x 396 pixels | 450 x 450 pixels |
| 1:1 | 1:1 | 1:1 |
| 467 | 467 | 455 |
| 29.3% | 29.3% | 30.7% |
| 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 |
| 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 | |||
| Pedometer | |||
| Instant messaging | |||
| MMS | |||
| SMS | |||
| A-GPS | |||
| Beidou | |||
| Galileo | |||
| GLONASS | |||
| GPS receiver | |||
| Internal memory | |||
| 1.5 GB | 1.5 GB | 1.5 GB |
| 16 GB | 16 GB | 16 GB |
| Bluetooth | v5.0 | v5.3 | v5.2 |
| NFC | |||
| Wireless Lan (WLAN/Wi-Fi) | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) | Wi-Fi 4 (802.11n) |
| Battery | |||
| 247 mAh | 247 mAh | 590 mAh |
| Wireless charging | |||
| Ambient light sensor | |||
| Barometer | |||
| Gesture recognition | |||
| Gyroscope | |||
| Heart rate monitor | |||
| Oxygen saturation (SpO2) | |||
| Thermometer | |||
| With Android | Vanaf 6.0 | Vanaf 11.0 | Vanaf 8.0 |
| eSIM | |||
| Flight mode | |||
| 4G (LTE) | |||
