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Display colors
Display only the differences
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| Total | 21 16 | 20 21 | 19 24 | 20 12 |
| General |
| Available | Yes | Yes | Yes | Yes |
| Release date (US) | December 2015 | December 2016 | May 2015 | May 2015 |
| Street price (US) | 149 $ | | 350 $ | 199 $ |
| Release date (FR) | December 2015 | December 2016 | May 2015 | May 2015 |
| Street price (EUR) | 149 € | | 350 € | 199 € |
| Operating System | Android Wear | Android Wear | Android Wear | Pebble OS 2.0 |
| Android compatible | Yes | Yes | Yes | Yes |
| Minimum Android version | | | Android 4.0 | Android 4.0 |
| iOS compatible | Yes | No | No | Yes |
| Minimum iOS version | | | | iOS 8 |
| Windows Phone compatible | No | No | No | Yes |
| BlackBerry compatible | No | No | No | Yes |
| Bluetooth | 4.1 | 4.1 | 4.1 | 4.0 |
| Bluetooth Low Energy | | Yes | Yes | |
| Colors | White Grey Gold | Silver Gold | Grey Black Gold | White Black Red |
| Size and weight |
|
37.2 in
11.8 in
45.2 in
55 oz
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45 in
10.8 in
45 in
48 oz
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42 in
11.3 in
42 in
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37.5 in
9.5 in
40.5 in
42.5 oz
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| Height | 49.6 45.2 | 45 in | 42 in | 40.5 in |
| Width | 40.7 37.2 | 45 in | 42 in | 37.5 in |
| Depth | 10.9 11.8 | 10.8 in | 11.3 in | 9.5 in |
| Weight | 55 oz | 48 oz | | 42.5 oz |
| Display screen |
| Type | Amoled | Amoled | Amoled | E-ink |
| Display screen in color | Yes | Yes | Yes | Yes |
| Touchscreen | Yes | Yes | Yes | No |
| Size | 1.63 1.45 | 1.39 in | 1.4 in | 1.25 in |
| Resolution | 320x320 280x280 | 400x400 pixels | 400x400 pixels | |
| PPI | 278 | 407 | 404 | |
| Battery |
| Capacity | 400 300 | 341 mAh | 300 mAh | |
| Battery life | 2 day(s) | 2 day(s) | 2 day(s) | 7 day(s) |
| Resistance |
| Waterproof | Yes | Yes | Yes | Yes |
| Depth | 1 m | 1 m | | |
| Splashproof | Yes | | Yes | Yes |
| Dustproof | Yes | Yes | Yes | Yes |
| Ingress Protection | IP67 | IP67 | | |
| Functions |
| Display language | English French | | English French | English French |
| Audio player | Yes | No | Yes | No |
| Camera | No | No | No | No |
| Hardware |
| Processor | Qualcomm Snapdragon 400 | Qualcomm Snapdragon Wear 2100 | Qualcomm APQ8026 | Arm Cortex M4 |
| Processor frequency | 1.2 GHz | 1.2 GHz | 1.2 GHz | |
| Core number | Quad core | Quad core | Single core | |
| RAM | 512 MB | 512 MB | 512 MB | |
| Storage capacity | 4096 MB | 4096 MB | 4096 MB | |
| Radio | No | No | No | |
| Headset plug | No | No | No | |
| Microphone | Yes | No | Yes | |
| Speaker | Yes | Yes | Yes | |
| Wi-Fi | Yes | Yes | No | |
| SIM card | No | No | No | |
| Vibration | | Yes | Yes | Yes |
| NFC | No | No | No | No |
| Qi wireless charging | No | | No | No |
| Memory card | No | No | No | No |
| Sensor |
| Accelerometer | Yes | Yes | Yes | Yes |
| Magnetometer | | No | No | No |
| Ambient light sensor | | Yes | No | Yes |
| Gyrometer | | Yes | Yes | No |
| Gyroscope | Yes | | Yes | Yes |
| Barometer | | No | | |
| Pedometer | | Yes | No | Yes |
| GPS | | No | No | No |
| Compass | | Yes | No | No |
| Heart rate monitor | No | No | Yes | Yes |
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