  |  |  |  |  |
| Screen size | 1.4 in | N/A | 1.22 in | 1.63 in | 1.3 in |
|---|---|---|---|---|---|
| Display technology | OLED | LCD | LCD | OLED | OLED |
| Screen resolution | 400 x 400 px | 240 x 204 px | 240 x 204 px | 320 x 320 px | 360 x 360 px |
| Type of glass | Sapphire glass | N/A | N/A | N/A | Gorilla Glass |
| Touchscreen | N/A | yes | yes | N/A | N/A |
| Type of screen | N/A | Colour screen | Colour screen | Colour screen | Colour screen |
| Accelerometer | yes | yes | N/A | N/A | N/A |
|---|---|---|---|---|---|
| Barometer | yes | N/A | N/A | N/A | yes |
| Heart rate monitor | yes | N/A | yes | N/A | yes |
| Microphone | yes | N/A | yes | yes | yes |
| Gyroscope | yes | yes | yes | yes | yes |
| Pedometer | yes | yes | yes | N/A | N/A |
| Built-in camera | N/A | N/A | N/A | yes | no |
| Compass | N/A | N/A | N/A | N/A | yes |
| Phone Functionality | N/A | N/A | N/A | N/A | yes |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.1 | 4.0 | 4.0 | 4.0 | 4.2 |
| Wi-Fi | yes | N/A | N/A | no | yes |
| USB | yes | yes | yes | yes | yes |
| Charging connection | Proprietary USB Cable | N/A | N/A | N/A | N/A |
| 3G (UMTS) | N/A | N/A | N/A | no | yes |
| 4G (LTE) | N/A | N/A | N/A | no | no |
| NFC | N/A | N/A | N/A | yes | yes |
| Built-in navigation system | N/A | N/A | N/A | no | yes |
| Wireless networking standard | N/A | N/A | N/A | N/A |
|
| GPS | N/A | N/A | N/A | N/A | yes |
| GLONASS | N/A | N/A | N/A | N/A | yes |
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 300.0 mAh | 300.0 mAh | 260.0 mAh | 315.0 mAh | 380.0 mAh |
| Average battery life (standby) | N/A | 72.0 h | 72.0 h | 150.0 h | 96.0 h |
| Battery life (running) | N/A | N/A | N/A | 25.0 h | 96.0 h |
| Wireless charging | N/A | N/A | N/A | N/A | yes |
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