  |  |  |  |  |
| Screen size | 1.2 in | 1.26 in | 1.63 in | 1.63 in | 1.63 in |
|---|---|---|---|---|---|
| Display technology | OLED | N/A | OLED | OLED | OLED |
| Screen resolution | 390 x 390 px | 144 x 168 px | 320 x 320 px | 320 x 320 px | 320 x 320 px |
| Type of glass | Gorilla Glass | N/A | N/A | Gorilla Glass | Gorilla Glass |
| Type of screen | Colour screen | N/A | Colour screen | Colour screen | Colour screen |
| Case diameter | 1.77 in | 2.48 in | 1.45 in | 1.45 in | 1.45 in |
|---|---|---|---|---|---|
| Case height | 1.93 in | N/A | 2.23 in | 2.3 in | 2.23 in |
| Case thickness | 0.5 in | 0.43 in | 0.44 in | 0.39 in | 0.44 in |
| Weight | 1.41 oz | 1.34 oz | 2.6 oz | 2.4 oz | 2.6 oz |
| Watch case material | Plastic/Synthetic |
| Stainless steel | Stainless steel | Stainless steel |
| Wrist band material | Rubber |
| Rubber | Rubber |
|
| Colour of bracelet |
| N/A | N/A |
|
|
| Water resistance | yes | yes | N/A | yes | yes |
| Fully waterproof | yes | N/A | N/A | yes | yes |
| IP code (level of dust/water resistance) | IP68 | N/A | N/A | IP67 | IP68 |
| Wrist band width | N/A | 0.87 in | N/A | 0.87 in | 0.87 in |
| Replaceable wrist bands | N/A | yes | N/A | N/A | yes |
| Anti scratch lens | N/A | yes | N/A | N/A | yes |
| Dust resistant | N/A | N/A | N/A | N/A | yes |
| 3G (UMTS) | no | N/A | no | N/A | no |
|---|---|---|---|---|---|
| 4G (LTE) | no | N/A | no | no | yes |
| Bluetooth | yes | yes | yes | yes | yes |
| Bluetooth version | 4.1 | 4.0 | 4.0 | 4.0 | 4.0 |
| Wi-Fi | yes | N/A | no | no | yes |
| Wireless networking standard |
| N/A | N/A | N/A |
|
| NFC | yes | N/A | yes | no | yes |
| USB | yes | N/A | yes | yes | yes |
| Built-in navigation system | yes | N/A | no | N/A | yes |
| GPS | yes | N/A | N/A | N/A | yes |
| GLONASS | yes | N/A | N/A | N/A | yes |
| Charging connection | N/A | Proprietary USB Cable | N/A | N/A | Wireless |
| Headphone connection | N/A | N/A | N/A | N/A | Bluetooth |
| Wireless charging | yes | N/A | N/A | N/A | yes |
|---|---|---|---|---|---|
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
| Battery capacity | 450.0 mAh | 140.0 mAh | 315.0 mAh | 300.0 mAh | 315.0 mAh |
| Average battery life (standby) | 600.0 h | 168.0 h | 150.0 h | 144.0 h | 150.0 h |
| Battery life (running) | 48.0 h | N/A | 25.0 h | 144.0 h | 25.0 h |
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