  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.2 in | 1.63 in | 1.3 in | 1.28 in |
|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | N/A |
| Screen resolution | 390 x 390 px | 320 x 320 px | 360 x 360 px | 176 x 176 px |
| Type of glass | Gorilla Glass | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | Colour screen | Colour screen | Colour screen | N/A |
| Built-in camera | no | no | no | N/A |
|---|---|---|---|---|
| Barometer | yes | yes | yes | yes |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | yes | yes | N/A |
| Compass | yes | yes | yes | yes |
| Gyroscope | yes | yes | yes | yes |
| Accelerometer | N/A | yes | N/A | N/A |
| Altimeter | N/A | yes | N/A | N/A |
| Phone Functionality | N/A | yes | yes | N/A |
| Case diameter | 1.77 in | 1.45 in | 1.81 in | 1.38 in |
|---|---|---|---|---|
| Case height | 1.93 in | 2.23 in | 1.93 in | 0.0 in |
| Case thickness | 0.5 in | 0.44 in | 0.51 in | 0.31 in |
| Weight | 1.41 oz | 2.6 oz | 2.19 oz | 1.09 oz |
| Watch case material | Plastic/Synthetic | Stainless steel |
| Plastic/Synthetic |
| Wrist band material | Rubber |
|
| Silicone |
| Colour of bracelet |
|
|
|
|
| Water resistance | yes | yes | yes | N/A |
| Fully waterproof | yes | yes | no | N/A |
| IP code (level of dust/water resistance) | IP68 | IP68 | IP68 | IP68 |
| Wrist band width | N/A | 0.87 in | N/A | N/A |
| Replaceable wrist bands | N/A | yes | N/A | N/A |
| Anti scratch lens | N/A | yes | N/A | N/A |
| Dust resistant | N/A | yes | N/A | N/A |
| 3G (UMTS) | no | no | yes | N/A |
|---|---|---|---|---|
| 4G (LTE) | no | yes | no | N/A |
| Bluetooth | yes | yes | yes | yes |
| Bluetooth version | 4.1 | 4.0 | 4.2 | 4.0 |
| Wi-Fi | yes | yes | yes | N/A |
| Wireless networking standard |
|
|
| N/A |
| NFC | yes | yes | yes | N/A |
| USB | yes | yes | yes | yes |
| Built-in navigation system | yes | yes | yes | yes |
| GPS | yes | yes | yes | N/A |
| GLONASS | yes | yes | yes | N/A |
| Charging connection | N/A | Wireless | N/A | N/A |
| Headphone connection | N/A | Bluetooth | N/A | N/A |
| Wireless charging | yes | yes | yes | N/A |
|---|---|---|---|---|
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-polymer |
| Battery capacity | 450.0 mAh | 315.0 mAh | 380.0 mAh | 190.0 mAh |
| Average battery life (standby) | 600.0 h | 150.0 h | 96.0 h | 1080.0 h |
| Battery life (running) | 48.0 h | 25.0 h | 96.0 h | 720.0 h |
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