  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.39 in | 1.4 in | 1.3 in | 1.97 in |
|---|---|---|---|---|
| Display technology | OLED | N/A | OLED | LED |
| Screen resolution | 400 x 400 px | 400 x 400 px | 360 x 360 px | 128 x 128 px |
| Type of glass | N/A | N/A | Gorilla Glass | N/A |
| Type of screen | N/A | N/A | Colour screen | N/A |
| Case thickness | 0.35 in | 0.51 in | 0.51 in | 0.59 in |
|---|---|---|---|---|
| Replaceable wrist bands | yes | N/A | N/A | N/A |
| Watch case material | Stainless steel | N/A |
| Polyamide |
| Wrist band material |
| N/A |
| Elastomer |
| Fully waterproof | yes | N/A | no | yes |
| Dust resistant | yes | yes | N/A | N/A |
| Case diameter | N/A | 1.77 in | 1.81 in | 1.97 in |
| Anti scratch lens | N/A | yes | N/A | yes |
| Water resistance | N/A | yes | yes | yes |
| IP code (level of dust/water resistance) | N/A | IP67 | IP68 | N/A |
| Case height | N/A | N/A | 1.93 in | N/A |
| Weight | N/A | N/A | 2.19 oz | 2.54 oz |
| Colour of bracelet | N/A | N/A |
| N/A |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.1 | 4.2 | 4.0 |
| Wi-Fi | yes | N/A | yes | N/A |
| NFC | yes | N/A | yes | N/A |
| Built-in navigation system | N/A | yes | yes | N/A |
| 3G (UMTS) | N/A | N/A | yes | N/A |
| 4G (LTE) | N/A | N/A | no | N/A |
| Wireless networking standard | N/A | N/A |
| N/A |
| USB | N/A | N/A | yes | N/A |
| GPS | N/A | N/A | yes | yes |
| GLONASS | N/A | N/A | yes | N/A |
| Charging connection | N/A | N/A | N/A | Proprietary USB Cable |
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