  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.39 in | 1.34 in | 0.95 in | 1.63 in |
|---|---|---|---|---|
| Display technology | OLED | LCD | OLED | OLED |
| Screen resolution | 400 x 400 px | 300 x 300 px | 144 x 168 px | 320 x 320 px |
| Type of glass | N/A | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | N/A | N/A | N/A | Colour screen |
| Accelerometer | yes | N/A | N/A | yes |
|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes |
| Heart rate monitor | N/A | yes | yes | yes |
| Microphone | N/A | N/A | yes | yes |
| Phone Functionality | N/A | N/A | yes | yes |
| Built-in camera | N/A | N/A | N/A | no |
| Altimeter | N/A | N/A | N/A | yes |
| Barometer | N/A | N/A | N/A | yes |
| Compass | N/A | N/A | N/A | yes |
| Case thickness | 0.35 in | N/A | 0.53 in | 0.44 in |
|---|---|---|---|---|
| Replaceable wrist bands | yes | N/A | N/A | yes |
| Watch case material | Stainless steel |
| Plastic/Synthetic | Stainless steel |
| Wrist band material |
| Silicone | Silicone |
|
| Fully waterproof | yes | N/A | N/A | yes |
| Dust resistant | yes | N/A | N/A | yes |
| Case diameter | N/A | 0.94 in | 1.57 in | 1.45 in |
| Case height | N/A | 0.94 in | 1.18 in | 2.23 in |
| Weight | N/A | 1.31 oz | 1.41 oz | 2.6 oz |
| Colour of bracelet | N/A |
|
|
|
| IP code (level of dust/water resistance) | N/A | N/A | IP67 | IP68 |
| Wrist band width | N/A | N/A | N/A | 0.87 in |
| Anti scratch lens | N/A | N/A | N/A | yes |
| Water resistance | N/A | N/A | N/A | yes |
| Bluetooth | yes | yes | no | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.1 | 4.0 |
| Wi-Fi | yes | yes | yes | yes |
| NFC | yes | N/A | N/A | yes |
| Built-in navigation system | N/A | no | yes | yes |
| 3G (UMTS) | N/A | N/A | yes | no |
| USB | N/A | N/A | yes | yes |
| GPS | N/A | N/A | yes | yes |
| 4G (LTE) | N/A | N/A | N/A | yes |
| Wireless networking standard | N/A | N/A | N/A |
|
| Charging connection | N/A | N/A | N/A | Wireless |
| Headphone connection | N/A | N/A | N/A | Bluetooth |
| GLONASS | N/A | N/A | N/A | yes |
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