  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| RAM Memory | 512.0 mB | 512.0 mB | 512.0 mB | 768.0 mB |
|---|---|---|---|---|
| CPU cores | Single Core | N/A | Quad Core | Dual Core |
| Internal storage space | N/A | 4.0 GB | 4.0 GB | 4.0 GB |
| CPU speed | N/A | N/A | 1.2 GHz | 1.0 GHz |
| Screen size | 1.39 in | 1.4 in | 1.3 in | 1.3 in |
|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | OLED |
| Screen resolution | 400 x 400 px | 400 x 400 px | 320 x 320 px | 360 x 360 px |
| Type of glass | N/A | Sapphire glass | Gorilla Glass | Gorilla Glass |
| Touchscreen | N/A | N/A | yes | N/A |
| Type of screen | N/A | N/A | Colour screen | Colour screen |
| Multi touch | N/A | N/A | yes | N/A |
| Accelerometer | yes | yes | yes | N/A |
|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes |
| Barometer | N/A | yes | yes | yes |
| Heart rate monitor | N/A | yes | yes | yes |
| Microphone | N/A | yes | yes | yes |
| Pedometer | N/A | yes | yes | N/A |
| Built-in camera | N/A | N/A | no | no |
| Compass | N/A | N/A | yes | yes |
| Phone Functionality | N/A | N/A | N/A | yes |
| Case thickness | 0.35 in | 0.44 in | 0.43 in | 0.51 in |
|---|---|---|---|---|
| Replaceable wrist bands | yes | yes | yes | N/A |
| Watch case material | Stainless steel | Stainless steel |
|
|
| Wrist band material |
|
| Leather |
|
| Fully waterproof | yes | N/A | yes | no |
| Dust resistant | yes | N/A | yes | N/A |
| Case diameter | N/A | 1.65 in | 1.79 in | 1.81 in |
| Case height | N/A | 0.0 in | 2.06 in | 1.93 in |
| Wrist band width | N/A | 0.71 in | N/A | N/A |
| Anti scratch lens | N/A | yes | N/A | N/A |
| IP code (level of dust/water resistance) | N/A | IP67 | IP67 | IP68 |
| Weight | N/A | N/A | 2.35 oz | 2.19 oz |
| Colour of bracelet | N/A | N/A | Black |
|
| Water resistance | N/A | N/A | yes | yes |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.1 | 4.1 | 4.2 |
| Wi-Fi | yes | yes | yes | yes |
| NFC | yes | N/A | no | yes |
| USB | N/A | yes | yes | yes |
| Charging connection | N/A | Proprietary USB Cable | Proprietary USB Cable | N/A |
| 3G (UMTS) | N/A | N/A | no | yes |
| 4G (LTE) | N/A | N/A | no | no |
| Headphone connection | N/A | N/A | Bluetooth | N/A |
| Built-in navigation system | N/A | N/A | no | yes |
| GPS | N/A | N/A | yes | yes |
| Wireless networking standard | N/A | N/A | N/A |
|
| GLONASS | N/A | N/A | N/A | yes |
| Battery capacity | 340.0 mAh | 300.0 mAh | 410.0 mAh | 380.0 mAh |
|---|---|---|---|---|
| Average battery life (standby) | 48.0 h | N/A | 24.0 h | 96.0 h |
| Battery technology | N/A | Li-Ion | Li-polymer | Li-Ion |
| Battery life (running) | N/A | N/A | 48.0 h | 96.0 h |
| Wireless charging | N/A | N/A | N/A | yes |
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