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Weight | 0.85 oz | 0.18 oz | 0.71 oz | 0.78 oz |
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Colour of product |
| Black | Black | Black |
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Accelerometer | yes | yes | yes | yes |
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Heart rate monitor | yes | N/A | yes | yes |
Calorie counter | yes | yes | yes | yes |
Distance meter | yes | N/A | yes | yes |
Pedometer | yes | yes | yes | yes |
Sleep reading | yes | yes | yes | yes |
Touchscreen | yes | no | yes | yes |
Vibration alarm | yes | yes | yes | yes |
Water resistant | N/A | yes | yes | N/A |
Fully Waterproof | N/A | no | N/A | N/A |
IP code (level of dust/water resistance) | N/A | IP67 | N/A | N/A |
Status indicator (LED-diod) | N/A | yes | N/A | N/A |
Watch | N/A | yes | yes | N/A |
Caller ID | N/A | N/A | N/A | yes |
Bluetooth | yes | yes | yes | yes |
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Bluetooth version | 4.2 | 4.0 | 4.2 BLE | 5.0 |
GPS | no | no | no | yes |
NFC | N/A | no | no | N/A |
Battery capacity | 91.0 mAh | 41.0 mAh | 110.0 mAh | 135.0 mAh |
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Battery life | 9.0 day | 30.0 day | 20.0 day | 20.0 day |
Battery type | N/A | Lithium Polymer | Lithium-Ion | Lithium Polymer |
Charging via USB | N/A | yes | yes | N/A |