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Available colors |
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Screen size | 0.5 in | N/A | 0.42 in | 0.78 in | 0.42 in |
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Display type | PMOLED | OLED | OLED | OLED | OLED |
Display | N/A | yes | yes | yes | N/A |
Screen resolution | N/A | 128 x 32 | N/A | 128 x 80 | N/A |
Colour of product | Black |
| Black | Black | Black |
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Calorie counter | yes | yes | yes | yes | yes |
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Distance meter | yes | yes | yes | yes | yes |
Pedometer | yes | yes | yes | yes | yes |
Sleep reading | yes | yes | yes | yes | yes |
Touchscreen | no | no | yes | yes | yes |
Water resistant | N/A | yes | yes | yes | N/A |
Fully Waterproof | N/A | no | no | N/A | N/A |
IP code (level of dust/water resistance) | N/A | IP54 | IP67 | N/A | IP67 |
Accelerometer | N/A | yes | yes | yes | yes |
Vibration alarm | N/A | yes | yes | yes | N/A |
Watch | N/A | yes | yes | yes | N/A |
Heart rate monitor | N/A | N/A | yes | yes | yes |
Caller ID | N/A | N/A | yes | N/A | N/A |
Support for HRM chest strap | N/A | N/A | yes | N/A | N/A |
Bluetooth | yes | yes | yes | yes | yes |
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Bluetooth version | N/A | 4.0 | 4.0 | 4.2 BLE | 4.0 |
GPS | N/A | no | no | no | N/A |
NFC | N/A | no | no | no | N/A |
Battery life | 14.0 day | 7.0 day | 20.0 day | 20.0 day | 20.0 day |
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Battery type | N/A | Lithium Polymer | Lithium Polymer | Lithium-Ion | Lithium Polymer |
Charging via USB | N/A | yes | yes | yes | N/A |
Battery capacity | N/A | N/A | 70.0 mAh | 110.0 mAh | 70.0 mAh |