  |  |  | |
| Editiorial reviews | |||
| User rating |
| RAM Memory | 512.0 mB | 512.0 mB | 512.0 mB |
|---|---|---|---|
| CPU cores | Single Core | Quad Core | Dual Core |
| Internal storage space | N/A | N/A | 4.0 GB |
| CPU speed | N/A | N/A | 1.2 GHz |
| Screen size | 1.39 in | 1.6 in | 1.34 in |
|---|---|---|---|
| Display technology | OLED | N/A | LCD |
| Screen resolution | 400 x 400 px | 320 x 320 px | 320 x 300 px |
| Type of glass | N/A | N/A | Gorilla Glass |
| Accelerometer | yes | yes | N/A |
|---|---|---|---|
| Gyroscope | yes | yes | yes |
| Ambient Light Sensor | N/A | yes | N/A |
| Compass | N/A | yes | yes |
| Barometer | N/A | N/A | yes |
| Heart rate monitor | N/A | N/A | yes |
| Microphone | N/A | N/A | yes |
| Case thickness | 0.35 in | 0.39 in | 0.47 in |
|---|---|---|---|
| Replaceable wrist bands | yes | yes | N/A |
| Watch case material | Stainless steel | Stainless steel |
|
| Wrist band material |
|
| Silicone |
| Fully waterproof | yes | yes | no |
| Dust resistant | yes | yes | N/A |
| Case diameter | N/A | 1.97 in | 1.81 in |
| Weight | N/A | 1.59 oz | 1.89 oz |
| Anti scratch lens | N/A | yes | N/A |
| Water resistance | N/A | yes | yes |
| Case height | N/A | N/A | 1.81 in |
| Colour of bracelet | N/A | N/A |
|
| IP code (level of dust/water resistance) | N/A | N/A | IP67 |
| Bluetooth | yes | yes | yes |
|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | yes |
| NFC | yes | yes | N/A |
| Charging connection | N/A | microUSB | N/A |
| Headphone connection | N/A | Bluetooth | N/A |
| GPS | N/A | yes | yes |
| USB | N/A | N/A | yes |
| Built-in navigation system | N/A | N/A | yes |
| GLONASS | N/A | N/A | yes |
| Battery capacity | 340.0 mAh | 420.0 mAh | 280.0 mAh |
|---|---|---|---|
| Average battery life (standby) | 48.0 h | 48.0 h | 278.0 h |
| Battery technology | N/A | Li-polymer | Li-polymer |
| Battery life (running) | N/A | N/A | 35.0 h |
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