  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| RAM Memory | 768.0 mB | 512.0 mB | 512.0 mB | 16.0 mB |
|---|---|---|---|---|
| Internal storage space | 4.0 GB | 4.0 GB | 4.0 GB | N/A |
| CPU cores | Quad Core | N/A | Dual Core | N/A |
| CPU speed | 1.1 GHz | 1.2 GHz | 1.0 GHz | N/A |
| Screen size | 1.2 in | 1.4 in | 1.63 in | 1.84 in |
|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | OLED |
| Screen resolution | 390 x 390 px | 400 x 400 px | 320 x 320 px | N/A |
| Type of glass | Gorilla Glass | Sapphire glass | Gorilla Glass | N/A |
| Type of screen | Colour screen | N/A | Colour screen | Colour screen |
| Touchscreen | N/A | N/A | N/A | yes |
| Built-in camera | no | N/A | yes | N/A |
|---|---|---|---|---|
| Barometer | yes | yes | N/A | N/A |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | yes | yes | N/A |
| Compass | yes | N/A | N/A | N/A |
| Gyroscope | yes | yes | yes | N/A |
| Accelerometer | N/A | yes | yes | yes |
| Pedometer | N/A | yes | N/A | yes |
| Sleep monitor | N/A | N/A | N/A | yes |
| Case diameter | 1.77 in | 1.65 in | 1.45 in | N/A |
|---|---|---|---|---|
| Case height | 1.93 in | 0.0 in | 2.3 in | 2.26 in |
| Case thickness | 0.5 in | 0.44 in | 0.39 in | 0.47 in |
| Weight | 1.41 oz | N/A | 2.4 oz | 0.95 oz |
| Watch case material | Plastic/Synthetic | Stainless steel | Stainless steel | N/A |
| Wrist band material | Rubber |
| Rubber | N/A |
| Colour of bracelet |
| White |
| N/A |
| Water resistance | yes | N/A | yes | N/A |
| Fully waterproof | yes | N/A | yes | N/A |
| IP code (level of dust/water resistance) | IP68 | IP67 | IP67 | N/A |
| Wrist band width | N/A | 0.71 in | 0.87 in | N/A |
| Replaceable wrist bands | N/A | yes | N/A | N/A |
| Anti scratch lens | N/A | yes | N/A | N/A |
| 3G (UMTS) | no | N/A | N/A | N/A |
|---|---|---|---|---|
| 4G (LTE) | no | N/A | no | N/A |
| Bluetooth | yes | yes | yes | yes |
| Bluetooth version | 4.1 | 4.1 | 4.0 | 4.0 |
| Wi-Fi | yes | yes | no | N/A |
| Wireless networking standard |
| N/A | N/A | N/A |
| NFC | yes | N/A | no | N/A |
| USB | yes | yes | yes | N/A |
| Built-in navigation system | yes | N/A | N/A | N/A |
| GPS | yes | N/A | N/A | N/A |
| GLONASS | yes | N/A | N/A | N/A |
| Charging connection | N/A | Proprietary USB Cable | N/A | N/A |
| Wireless charging | yes | N/A | N/A | N/A |
|---|---|---|---|---|
| Battery technology | Li-Ion | Li-Ion | Li-Ion | N/A |
| Battery capacity | 450.0 mAh | 300.0 mAh | 300.0 mAh | 210.0 mAh |
| Average battery life (standby) | 600.0 h | 72.0 h | 144.0 h | 96.0 h |
| Battery life (running) | 48.0 h | N/A | 144.0 h | N/A |
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