  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.39 in | 1.2 in | 1.26 in | 1.6 in |
|---|---|---|---|---|
| Display technology | OLED | OLED | N/A | N/A |
| Screen resolution | 400 x 400 px | 390 x 390 px | 144 x 168 px | 320 x 320 px |
| Type of glass | N/A | Gorilla Glass | N/A | N/A |
| Type of screen | N/A | Colour screen | N/A | N/A |
| Case thickness | 0.35 in | 0.5 in | 0.43 in | 0.39 in |
|---|---|---|---|---|
| Replaceable wrist bands | yes | N/A | yes | yes |
| Watch case material | Stainless steel | Plastic/Synthetic |
| Stainless steel |
| Wrist band material |
| Rubber |
|
|
| Fully waterproof | yes | yes | N/A | yes |
| Dust resistant | yes | N/A | N/A | yes |
| Case diameter | N/A | 1.77 in | 2.48 in | 1.97 in |
| Case height | N/A | 1.93 in | N/A | N/A |
| Weight | N/A | 1.41 oz | 1.34 oz | 1.59 oz |
| Colour of bracelet | N/A |
| N/A | N/A |
| Water resistance | N/A | yes | yes | yes |
| IP code (level of dust/water resistance) | N/A | IP68 | N/A | N/A |
| Wrist band width | N/A | N/A | 0.87 in | N/A |
| Anti scratch lens | N/A | N/A | yes | yes |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.1 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | N/A | yes |
| NFC | yes | yes | N/A | yes |
| 3G (UMTS) | N/A | no | N/A | N/A |
| 4G (LTE) | N/A | no | N/A | N/A |
| Wireless networking standard | N/A |
| N/A | N/A |
| USB | N/A | yes | N/A | N/A |
| Built-in navigation system | N/A | yes | N/A | N/A |
| GPS | N/A | yes | N/A | yes |
| GLONASS | N/A | yes | N/A | N/A |
| Charging connection | N/A | N/A | Proprietary USB Cable | microUSB |
| Headphone connection | N/A | N/A | N/A | Bluetooth |
| Battery capacity | 340.0 mAh | 450.0 mAh | 140.0 mAh | 420.0 mAh |
|---|---|---|---|---|
| Average battery life (standby) | 48.0 h | 600.0 h | 168.0 h | 48.0 h |
| Wireless charging | N/A | yes | N/A | N/A |
| Battery technology | N/A | Li-Ion | Li-Ion | Li-polymer |
| Battery life (running) | N/A | 48.0 h | N/A | N/A |
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