  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| RAM Memory | 128.0 mB | 768.0 mB | N/A | 512.0 mB |
|---|---|---|---|---|
| Internal storage space | 256.0 GB | 4.0 GB | 8.0 GB | 4.0 GB |
| CPU cores | N/A | Quad Core | N/A | Dual Core |
| CPU speed | N/A | 1.1 GHz | N/A | 1.2 GHz |
| Screen size | 1.54 in | 1.2 in | 1.26 in | 1.34 in |
|---|---|---|---|---|
| Display technology | LCD | OLED | LCD | LCD |
| Screen resolution | 240 x 240 px | 390 x 390 px | 144 x 168 px | 320 x 300 px |
| Type of glass | N/A | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | N/A | Colour screen | Monochrome | N/A |
| Built-in camera | yes | no | no | N/A |
|---|---|---|---|---|
| Accelerometer | yes | N/A | N/A | N/A |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | yes | yes | yes |
| Gyroscope | yes | yes | yes | yes |
| Pedometer | yes | N/A | N/A | N/A |
| Barometer | N/A | yes | N/A | yes |
| Compass | N/A | yes | N/A | yes |
| Case diameter | 1.69 in | 1.77 in | 1.56 in | 1.81 in |
|---|---|---|---|---|
| Case height | 0.0 in | 1.93 in | 1.19 in | 1.81 in |
| Case thickness | 0.43 in | 0.5 in | 0.44 in | 0.47 in |
| Weight | 1.53 oz | 1.41 oz | 1.12 oz | 1.89 oz |
| Replaceable wrist bands | yes | N/A | N/A | N/A |
| Watch case material |
| Plastic/Synthetic | Plastic/Synthetic |
|
| Wrist band material |
| Rubber | Silicone | Silicone |
| Colour of bracelet |
|
|
|
|
| Anti scratch lens | yes | N/A | N/A | N/A |
| Water resistance | N/A | yes | yes | yes |
| Fully waterproof | N/A | yes | no | no |
| IP code (level of dust/water resistance) | N/A | IP68 | N/A | IP67 |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 3.0 | 4.1 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | no | yes |
| USB | yes | yes | no | yes |
| Charging connection | Proprietary USB Cable | N/A | N/A | N/A |
| Built-in navigation system | no | yes | no | yes |
| 3G (UMTS) | N/A | no | no | N/A |
| 4G (LTE) | N/A | no | no | N/A |
| Wireless networking standard | N/A |
| N/A | N/A |
| NFC | N/A | yes | no | N/A |
| GPS | N/A | yes | N/A | yes |
| GLONASS | N/A | yes | N/A | yes |
| Battery technology | Li-Ion | Li-Ion | N/A | Li-polymer |
|---|---|---|---|---|
| Battery capacity | 400.0 mAh | 450.0 mAh | N/A | 280.0 mAh |
| Average battery life (standby) | 240.0 h | 600.0 h | N/A | 278.0 h |
| Battery life (running) | 24.0 h | 48.0 h | 154.0 h | 35.0 h |
| Wireless charging | N/A | yes | N/A | N/A |
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