  |  |  |  |  |
| Screen size | 1.34 in | 1.34 in | 1.4 in | 1.3 in | 1.34 in |
|---|---|---|---|---|---|
| Display technology | LCD | LCD | OLED | OLED | LCD |
| Screen resolution | 300 x 300 px | 300 x 300 px | 400 x 400 px | N/A | 320 x 300 px |
| Type of glass | Gorilla Glass | Gorilla Glass | Sapphire glass | Mineral glass | Gorilla Glass |
| Heart rate monitor | yes | yes | yes | N/A | yes |
|---|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes | yes |
| Accelerometer | N/A | N/A | yes | N/A | N/A |
| Barometer | N/A | N/A | yes | N/A | yes |
| Microphone | N/A | N/A | yes | N/A | yes |
| Pedometer | N/A | N/A | yes | N/A | N/A |
| Compass | N/A | N/A | N/A | N/A | yes |
| Case diameter | 0.94 in | 0.94 in | 1.65 in | 1.73 in | 1.81 in |
|---|---|---|---|---|---|
| Case height | 0.94 in | 0.94 in | 0.0 in | 0.0 in | 1.81 in |
| Weight | 1.31 oz | 1.31 oz | N/A | N/A | 1.89 oz |
| Watch case material |
| Aluminum | Stainless steel | Stainless steel |
|
| Wrist band material | Silicone |
|
|
| Silicone |
| Colour of bracelet |
|
| N/A |
|
|
| Case thickness | N/A | N/A | 0.44 in | 0.55 in | 0.47 in |
| Wrist band width | N/A | N/A | 0.71 in | N/A | N/A |
| Replaceable wrist bands | N/A | N/A | yes | N/A | 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 | N/A | yes |
| Fully waterproof | N/A | N/A | N/A | N/A | no |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.1 | N/A | 4.0 |
| Wi-Fi | yes | yes | yes | N/A | yes |
| Built-in navigation system | no | yes | N/A | yes | yes |
| NFC | N/A | yes | N/A | N/A | N/A |
| USB | N/A | N/A | yes | N/A | yes |
| Charging connection | N/A | N/A | Proprietary USB Cable | N/A | N/A |
| GPS | N/A | N/A | N/A | N/A | yes |
| GLONASS | N/A | N/A | N/A | N/A | yes |
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