  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Screen size | 1.3 in | 1.56 in | N/A | 1.3 in |
|---|---|---|---|---|
| Display technology | OLED | LCD | OLED | OLED |
| Screen resolution | 320 x 320 px | 320 x 290 px | 96 x 64 px | 360 x 360 px |
| Type of glass | Plexiglas | N/A | N/A | Gorilla Glass |
| Type of screen | Colour screen | N/A | N/A | Colour screen |
| Touchscreen | N/A | yes | N/A | N/A |
| Built-in camera | no | N/A | N/A | no |
|---|---|---|---|---|
| Ambient Light Sensor | yes | N/A | N/A | N/A |
| Barometer | yes | N/A | N/A | yes |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | N/A | N/A | yes |
| Compass | yes | N/A | N/A | yes |
| Gyroscope | yes | N/A | yes | yes |
| Auto adjust to smartphone time | N/A | yes | N/A | N/A |
| Pedometer | N/A | yes | N/A | N/A |
| Phone Functionality | N/A | N/A | N/A | yes |
| Case diameter | 1.83 in | 1.81 in | 2.32 in | 1.81 in |
|---|---|---|---|---|
| Case height | 2.11 in | N/A | 1.18 in | 1.93 in |
| Case thickness | 0.38 in | 0.43 in | 0.35 in | 0.51 in |
| Wrist band width | 0.87 in | N/A | N/A | N/A |
| Weight | 2.19 oz | 1.73 oz | 1.45 oz | 2.19 oz |
| Replaceable wrist bands | yes | yes | N/A | N/A |
| Watch case material |
| Stainless steel | N/A |
|
| Wrist band material |
| N/A | N/A |
|
| Colour of bracelet | Black | N/A | N/A |
|
| Anti scratch lens | yes | yes | N/A | N/A |
| Water resistance | yes | yes | N/A | yes |
| Fully waterproof | yes | yes | N/A | no |
| IP code (level of dust/water resistance) | IP67 | N/A | N/A | IP68 |
| 3G (UMTS) | no | N/A | N/A | yes |
|---|---|---|---|---|
| 4G (LTE) | no | N/A | N/A | no |
| Bluetooth | yes | yes | yes | yes |
| Bluetooth version | 4.0 | 4.0 | 2.1 | 4.2 |
| Wi-Fi | yes | yes | N/A | yes |
| NFC | no | N/A | N/A | yes |
| USB | yes | N/A | yes | yes |
| Charging connection | microUSB | Wireless | N/A | N/A |
| Built-in navigation system | no | N/A | N/A | yes |
| Headphone connection | N/A | Bluetooth | N/A | N/A |
| Wireless networking standard | N/A | N/A | N/A |
|
| GPS | N/A | N/A | N/A | yes |
| GLONASS | N/A | N/A | N/A | yes |
| Battery technology | Li-polymer | N/A | Li-Ion | Li-Ion |
|---|---|---|---|---|
| Battery capacity | 410.0 mAh | 320.0 mAh | 200.0 mAh | 380.0 mAh |
| Average battery life (standby) | 24.0 h | 24.0 h | N/A | 96.0 h |
| Battery life (running) | 36.0 h | N/A | N/A | 96.0 h |
| Wireless charging | N/A | N/A | N/A | yes |
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