  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.63 in | 1.65 in | 1.84 in | 1.3 in |
|---|---|---|---|---|
| Display technology | OLED | N/A | OLED | OLED |
| Screen resolution | 320 x 320 px | 360 x 360 px | N/A | 128 x 128 px |
| Type of glass | Gorilla Glass | N/A | N/A | N/A |
| Type of screen | Colour screen | N/A | Colour screen | N/A |
| Touchscreen | N/A | yes | yes | N/A |
| Multi touch | N/A | yes | N/A | yes |
| Built-in camera | yes | N/A | N/A | N/A |
|---|---|---|---|---|
| Accelerometer | yes | yes | yes | yes |
| Heart rate monitor | yes | yes | yes | N/A |
| Microphone | yes | N/A | N/A | N/A |
| Gyroscope | yes | yes | N/A | N/A |
| Phone Functionality | N/A | yes | N/A | N/A |
| Magnetometer | N/A | yes | N/A | N/A |
| Pedometer | N/A | N/A | yes | N/A |
| Sleep monitor | N/A | N/A | yes | N/A |
| 4G (LTE) | no | N/A | N/A | N/A |
|---|---|---|---|---|
| Bluetooth | yes | yes | yes | yes |
| Bluetooth version | 4.0 | 4.0 | 4.0 | 3.0 |
| Wi-Fi | no | yes | N/A | N/A |
| NFC | no | N/A | N/A | N/A |
| USB | yes | N/A | N/A | N/A |
| GPS | N/A | yes | N/A | yes |
| Charging connection | N/A | N/A | N/A | Proprietary USB Cable |
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