  |  |  |  | |
| Available colors | ||||
| Editiorial reviews | ||||
| User rating |
| Display | yes | yes | N/A | N/A |
|---|---|---|---|---|
| Screen resolution | 64 x 64 | 128 x 80 | 120 x 240 | 126 x 294 |
| Screen size | 0.39 in | 0.78 in | 0.95 in | 1.1 in |
| Display type | MIP | OLED | AMOLED | AMOLED |
| Weight | 0.99 oz | 0.71 oz | 0.78 oz | 4.2 oz |
|---|
| Colour of product |
| Black | Black | Black |
|---|
| Water resistant | yes | yes | N/A | N/A |
|---|---|---|---|---|
| Fully Waterproof | yes | N/A | N/A | N/A |
| Accelerometer | yes | yes | yes | yes |
| Heart rate monitor | yes | yes | yes | yes |
| Calorie counter | yes | yes | yes | N/A |
| Distance meter | yes | yes | yes | N/A |
| Pedometer | yes | yes | yes | N/A |
| Sleep reading | yes | yes | yes | yes |
| Support for HRM chest strap | yes | N/A | N/A | N/A |
| Touchscreen | no | yes | yes | yes |
| Vibration alarm | yes | yes | yes | N/A |
| Watch | yes | yes | N/A | N/A |
| Caller ID | N/A | N/A | yes | N/A |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.2 BLE | 5.0 | 5.0 |
| GPS | no | no | yes | N/A |
| NFC | no | no | N/A | N/A |
| Battery life | 365.0 day | 20.0 day | 20.0 day | 14.0 day |
|---|---|---|---|---|
| Battery type | CR1632 | Lithium-Ion | Lithium Polymer | N/A |
| Charging via USB | no | yes | N/A | N/A |
| Battery capacity | N/A | 110.0 mAh | 135.0 mAh | N/A |
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