  |  |  |  |  |
| Screen size | 1.39 in | 1.34 in | 1.4 in | 1.63 in | 1.63 in |
|---|---|---|---|---|---|
| Display technology | OLED | LCD | OLED | OLED | OLED |
| Screen resolution | 400 x 400 px | 300 x 300 px | 400 x 400 px | 320 x 320 px | 320 x 320 px |
| Type of glass | N/A | Gorilla Glass | Sapphire glass | N/A | Gorilla Glass |
| Multi touch | N/A | N/A | N/A | yes | N/A |
| Type of screen | N/A | N/A | N/A | N/A | Colour screen |
| Case thickness | 0.35 in | N/A | 0.44 in | 0.43 in | 0.39 in |
|---|---|---|---|---|---|
| Replaceable wrist bands | yes | N/A | yes | N/A | N/A |
| Watch case material | Stainless steel |
| Stainless steel | Stainless steel |
|
| Wrist band material |
| Silicone |
| N/A | Rubber |
| Fully waterproof | yes | N/A | N/A | N/A | N/A |
| Dust resistant | yes | N/A | N/A | N/A | N/A |
| Case diameter | N/A | 0.94 in | 1.65 in | 2.64 in | 1.49 in |
| Case height | N/A | 0.94 in | 0.0 in | N/A | 2.31 in |
| Weight | N/A | 1.31 oz | N/A | 2.57 oz | 1.94 oz |
| Colour of bracelet | N/A |
| N/A | N/A |
|
| Wrist band width | N/A | N/A | 0.71 in | 0.87 in | N/A |
| Anti scratch lens | N/A | N/A | yes | N/A | N/A |
| IP code (level of dust/water resistance) | N/A | N/A | IP67 | N/A | IP67 |
| Water resistance | N/A | N/A | N/A | yes | yes |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.1 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | yes | N/A | no |
| NFC | yes | N/A | N/A | N/A | no |
| Built-in navigation system | N/A | no | N/A | N/A | N/A |
| USB | N/A | N/A | yes | N/A | yes |
| Charging connection | N/A | N/A | Proprietary USB Cable | Proprietary USB Cable | N/A |
| 4G (LTE) | N/A | N/A | N/A | N/A | no |
| Infrared (IR) | N/A | N/A | N/A | N/A | yes |
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