  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Display technology | OLED | OLED | OLED | N/A |
|---|---|---|---|---|
| Screen resolution | 96 x 64 px | 360 x 360 px | 320 x 320 px | 320 x 320 px |
| Touchscreen | N/A | yes | N/A | N/A |
| Screen size | N/A | 1.2 in | 1.63 in | 1.6 in |
| Type of glass | N/A | Gorilla Glass | Gorilla Glass | N/A |
| Type of screen | N/A | Colour screen | Colour screen | N/A |
| Heart rate monitor | yes | yes | yes | N/A |
|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes |
| Built-in camera | N/A | no | no | N/A |
| Accelerometer | N/A | yes | yes | yes |
| Ambient Light Sensor | N/A | yes | N/A | yes |
| Barometer | N/A | yes | yes | N/A |
| Microphone | N/A | yes | yes | N/A |
| Pedometer | N/A | yes | N/A | N/A |
| Altimeter | N/A | N/A | yes | N/A |
| Compass | N/A | N/A | yes | yes |
| Phone Functionality | N/A | N/A | yes | N/A |
| Case diameter | 2.32 in | 1.67 in | 1.45 in | 1.97 in |
|---|---|---|---|---|
| Case height | 1.18 in | 1.96 in | 2.23 in | N/A |
| Case thickness | 0.35 in | 0.45 in | 0.44 in | 0.39 in |
| Weight | 1.45 oz | 1.66 oz | 2.6 oz | 1.59 oz |
| Watch case material | N/A | Stainless steel | Stainless steel | Stainless steel |
| Wrist band material | N/A |
|
|
|
| Colour of bracelet | N/A |
|
| N/A |
| Water resistance | N/A | yes | yes | yes |
| Fully waterproof | N/A | yes | yes | yes |
| Dust resistant | N/A | yes | yes | yes |
| IP code (level of dust/water resistance) | N/A | IP68 | IP68 | N/A |
| Wrist band width | N/A | N/A | 0.87 in | N/A |
| Replaceable wrist bands | N/A | N/A | yes | yes |
| Anti scratch lens | N/A | N/A | yes | yes |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 2.1 | 4.1 | 4.0 | 4.0 |
| USB | yes | yes | yes | N/A |
| 3G (UMTS) | N/A | no | no | N/A |
| 4G (LTE) | N/A | yes | yes | N/A |
| Wi-Fi | N/A | yes | yes | yes |
| Wireless networking standard | N/A |
|
| N/A |
| NFC | N/A | yes | yes | yes |
| Charging connection | N/A | Wireless | Wireless | microUSB |
| Headphone connection | N/A | Bluetooth | Bluetooth | Bluetooth |
| Built-in navigation system | N/A | no | yes | N/A |
| GPS | N/A | N/A | yes | yes |
| GLONASS | N/A | N/A | yes | N/A |
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-polymer |
|---|---|---|---|---|
| Battery capacity | 200.0 mAh | 250.0 mAh | 315.0 mAh | 420.0 mAh |
| Wireless charging | N/A | yes | yes | N/A |
| Average battery life (standby) | N/A | 24.0 h | 150.0 h | 48.0 h |
| Battery life (running) | N/A | 24.0 h | 25.0 h | N/A |
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