  |  |  | |
| Editiorial reviews | |||
| User rating |
| Screen size | 1.54 in | 1.2 in | N/A |
|---|---|---|---|
| Display technology | LCD | OLED | LCD |
| Screen resolution | 240 x 240 px | 390 x 390 px | 320 x 300 px |
| Type of glass | N/A | Gorilla Glass | Sapphire glass |
| Type of screen | N/A | Colour screen | N/A |
| Built-in camera | yes | no | N/A |
|---|---|---|---|
| Accelerometer | yes | N/A | N/A |
| Heart rate monitor | yes | yes | yes |
| Microphone | yes | yes | N/A |
| Gyroscope | yes | yes | N/A |
| Pedometer | yes | N/A | N/A |
| Barometer | N/A | yes | yes |
| Compass | N/A | yes | N/A |
| Case diameter | 1.69 in | 1.77 in | 1.97 in |
|---|---|---|---|
| Case height | 0.0 in | 1.93 in | 1.97 in |
| Case thickness | 0.43 in | 0.5 in | 0.66 in |
| Weight | 1.53 oz | 1.41 oz | 2.86 oz |
| Replaceable wrist bands | yes | N/A | N/A |
| Watch case material |
| Plastic/Synthetic | Stainless steel |
| Wrist band material |
| Rubber | Silicone |
| Colour of bracelet |
|
|
|
| Anti scratch lens | yes | N/A | N/A |
| Water resistance | N/A | yes | N/A |
| Fully waterproof | N/A | yes | N/A |
| IP code (level of dust/water resistance) | N/A | IP68 | N/A |
| Bluetooth | yes | yes | yes |
|---|---|---|---|
| Bluetooth version | 3.0 | 4.1 | N/A |
| Wi-Fi | yes | yes | N/A |
| USB | yes | yes | yes |
| Charging connection | Proprietary USB Cable | N/A | N/A |
| Built-in navigation system | no | yes | yes |
| 3G (UMTS) | N/A | no | N/A |
| 4G (LTE) | N/A | no | N/A |
| Wireless networking standard | N/A |
| N/A |
| NFC | N/A | yes | N/A |
| GPS | N/A | yes | N/A |
| GLONASS | N/A | yes | N/A |
| Battery technology | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|
| Battery capacity | 400.0 mAh | 450.0 mAh | N/A |
| Average battery life (standby) | 240.0 h | 600.0 h | 336.0 h |
| Battery life (running) | 24.0 h | 48.0 h | 120.0 h |
| Wireless charging | N/A | yes | N/A |
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