  |  |  |  |  |
| Screen size | 1.4 in | 1.5 in | 1.85 in | 1.19 in | N/A |
|---|---|---|---|---|---|
| Display technology | OLED | LCD | OLED | OLED | OLED |
| Screen resolution | 400 x 400 px | 360 x 326 px | N/A | 390 x 390 px | 96 x 64 px |
| Type of glass | Sapphire glass | Mineral glass | Mineral glass | Mineral glass | N/A |
| Accelerometer | yes | N/A | N/A | N/A | N/A |
|---|---|---|---|---|---|
| Barometer | yes | N/A | N/A | N/A | N/A |
| Heart rate monitor | yes | N/A | N/A | N/A | yes |
| Microphone | yes | yes | N/A | yes | N/A |
| Gyroscope | yes | yes | yes | yes | yes |
| Pedometer | yes | N/A | N/A | N/A | N/A |
| Built in clockwork (Hybrid) | N/A | yes | N/A | N/A | N/A |
| Case diameter | 1.65 in | 0.87 in | 1.77 in | 1.65 in | 2.32 in |
|---|---|---|---|---|---|
| Case height | 0.0 in | 1.75 in | 1.77 in | 1.65 in | 1.18 in |
| Case thickness | 0.44 in | 0.51 in | 0.51 in | N/A | 0.35 in |
| Wrist band width | 0.71 in | N/A | N/A | N/A | N/A |
| Replaceable wrist bands | yes | N/A | N/A | N/A | N/A |
| Watch case material | Stainless steel | Stainless steel | Stainless steel | Stainless steel | N/A |
| Wrist band material |
|
| Steel |
| N/A |
| Anti scratch lens | yes | N/A | N/A | N/A | N/A |
| IP code (level of dust/water resistance) | IP67 | IP67 | N/A | IP67 | N/A |
| Weight | N/A | 5.75 oz | 5.89 oz | N/A | 1.45 oz |
| Colour of bracelet | N/A |
|
|
| N/A |
| Water resistance | N/A | yes | N/A | N/A | N/A |
| Fully waterproof | N/A | yes | N/A | N/A | N/A |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.1 | 4.1 | 4.1 | 4.1 | 2.1 |
| Wi-Fi | yes | yes | N/A | N/A | N/A |
| USB | yes | N/A | N/A | N/A | yes |
| Charging connection | Proprietary USB Cable | N/A | N/A | N/A | N/A |
| Built-in navigation system | N/A | no | yes | no | N/A |
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