  |  |  |  |  |
| Screen size | 1.2 in | 1.4 in | 1.5 in | 1.4 in | N/A |
|---|---|---|---|---|---|
| Display technology | LED | OLED | LCD | LCD | OLED |
| Screen resolution | N/A | 400 x 400 px | 360 x 326 px | 320 x 290 px | 96 x 64 px |
| Type of glass | N/A | Sapphire glass | Mineral glass | Mineral glass | N/A |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.1 | 4.1 | 4.1 | 2.1 |
| Charging connection | microUSB | Proprietary USB Cable | N/A | N/A | N/A |
| GPS | yes | N/A | N/A | N/A | N/A |
| Wi-Fi | N/A | yes | yes | yes | N/A |
| USB | N/A | yes | N/A | N/A | yes |
| Built-in navigation system | N/A | N/A | no | no | N/A |
| Battery technology | Li-Ion | Li-Ion | N/A | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 180.0 mAh | 300.0 mAh | 360.0 mAh | 360.0 mAh | 200.0 mAh |
| Average battery life (standby) | 24.0 h | N/A | 24.0 h | 48.0 h | N/A |
| Wireless charging | N/A | N/A | yes | yes | N/A |
| Battery life (running) | N/A | N/A | 24.0 h | 24.0 h | N/A |
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