  |  |  | |
| Editiorial reviews | |||
| User rating |
| Touchscreen | yes | N/A | N/A |
|---|---|---|---|
| Screen size | 1.56 in | N/A | 1.63 in |
| Display technology | LCD | OLED | OLED |
| Screen resolution | 320 x 290 px | 96 x 64 px | 320 x 320 px |
| Type of glass | N/A | N/A | Gorilla Glass |
| Type of screen | N/A | N/A | Colour screen |
| Auto adjust to smartphone time | yes | N/A | N/A |
|---|---|---|---|
| Heart rate monitor | yes | yes | yes |
| Pedometer | yes | N/A | N/A |
| Gyroscope | N/A | yes | yes |
| Built-in camera | N/A | N/A | yes |
| Accelerometer | N/A | N/A | yes |
| Microphone | N/A | N/A | yes |
| Case diameter | 1.81 in | 2.32 in | 1.45 in |
|---|---|---|---|
| Case thickness | 0.43 in | 0.35 in | 0.39 in |
| Weight | 1.73 oz | 1.45 oz | 2.4 oz |
| Replaceable wrist bands | yes | N/A | N/A |
| Watch case material | Stainless steel | N/A | Stainless steel |
| Anti scratch lens | yes | N/A | N/A |
| Water resistance | yes | N/A | yes |
| Fully waterproof | yes | N/A | yes |
| Case height | N/A | 1.18 in | 2.3 in |
| Wrist band width | N/A | N/A | 0.87 in |
| Wrist band material | N/A | N/A | Rubber |
| Colour of bracelet | N/A | N/A |
|
| IP code (level of dust/water resistance) | N/A | N/A | IP67 |
| Bluetooth | yes | yes | yes |
|---|---|---|---|
| Bluetooth version | 4.0 | 2.1 | 4.0 |
| Wi-Fi | yes | N/A | no |
| Charging connection | Wireless | N/A | N/A |
| Headphone connection | Bluetooth | N/A | N/A |
| USB | N/A | yes | yes |
| 4G (LTE) | N/A | N/A | no |
| NFC | N/A | N/A | no |
| Battery capacity | 320.0 mAh | 200.0 mAh | 300.0 mAh |
|---|---|---|---|
| Average battery life (standby) | 24.0 h | N/A | 144.0 h |
| Battery technology | N/A | Li-Ion | Li-Ion |
| Battery life (running) | N/A | N/A | 144.0 h |
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