  |  |  |  |  |
| Screen size | 1.39 in | 1.34 in | 1.4 in | 1.63 in | 1.6 in |
|---|---|---|---|---|---|
| Display technology | OLED | LCD | N/A | OLED | N/A |
| Screen resolution | 400 x 400 px | 300 x 300 px | 400 x 400 px | 320 x 320 px | 320 x 320 px |
| Type of glass | N/A | Gorilla Glass | N/A | Gorilla Glass | N/A |
| Type of screen | N/A | N/A | N/A | Colour screen | N/A |
| Accelerometer | yes | N/A | yes | yes | yes |
|---|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes | yes |
| Heart rate monitor | N/A | yes | yes | yes | N/A |
| Compass | N/A | N/A | yes | N/A | yes |
| Pedometer | N/A | N/A | yes | N/A | N/A |
| Built-in camera | N/A | N/A | N/A | no | N/A |
| Microphone | N/A | N/A | N/A | yes | N/A |
| Ambient Light Sensor | N/A | N/A | N/A | N/A | yes |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.1 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | N/A | no | yes |
| NFC | yes | N/A | N/A | no | yes |
| Built-in navigation system | N/A | no | yes | N/A | N/A |
| 4G (LTE) | N/A | N/A | N/A | no | N/A |
| USB | N/A | N/A | N/A | yes | N/A |
| Infrared (IR) | N/A | N/A | N/A | yes | N/A |
| Charging connection | N/A | N/A | N/A | N/A | microUSB |
| Headphone connection | N/A | N/A | N/A | N/A | Bluetooth |
| GPS | N/A | N/A | N/A | N/A | yes |
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