  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| Internal storage space | 4.0 GB | 8.0 GB | 4.0 GB | 4.0 GB |
|---|---|---|---|---|
| CPU cores | N/A | Single Core | Single Core | Dual Core |
| RAM Memory | N/A | N/A | 512.0 mB | 512.0 mB |
| CPU speed | N/A | N/A | 0.8 GHz | 1.2 GHz |
| Screen size | 1.34 in | 1.25 in | 1.63 in | 1.34 in |
|---|---|---|---|---|
| Display technology | LCD | LCD | OLED | LCD |
| Screen resolution | 300 x 300 px | 144 x 168 px | 320 x 320 px | 320 x 300 px |
| Type of glass | Gorilla Glass | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | N/A | Colour screen | Colour screen | N/A |
| Heart rate monitor | yes | N/A | yes | yes |
|---|---|---|---|---|
| Gyroscope | yes | yes | yes | yes |
| Built-in camera | N/A | no | no | N/A |
| Accelerometer | N/A | yes | yes | N/A |
| Ambient Light Sensor | N/A | yes | N/A | N/A |
| Auto adjust to smartphone time | N/A | yes | N/A | N/A |
| Microphone | N/A | yes | yes | yes |
| Compass | N/A | yes | yes | yes |
| Magnetometer | N/A | yes | N/A | N/A |
| Pedometer | N/A | yes | N/A | N/A |
| Altimeter | N/A | N/A | yes | N/A |
| Barometer | N/A | N/A | yes | yes |
| Phone Functionality | N/A | N/A | yes | N/A |
| Case diameter | 0.94 in | 1.59 in | 1.45 in | 1.81 in |
|---|---|---|---|---|
| Case height | 0.94 in | 1.48 in | 2.23 in | 1.81 in |
| Weight | 1.31 oz | 1.5 oz | 2.6 oz | 1.89 oz |
| Watch case material |
|
| Stainless steel |
|
| Wrist band material | Silicone |
|
| Silicone |
| Colour of bracelet |
|
|
|
|
| Case thickness | N/A | 0.37 in | 0.44 in | 0.47 in |
| Wrist band width | N/A | 0.87 in | 0.87 in | N/A |
| Anti scratch lens | N/A | yes | yes | N/A |
| Water resistance | N/A | yes | yes | yes |
| Fully waterproof | N/A | yes | yes | no |
| Dust resistant | N/A | yes | yes | N/A |
| Replaceable wrist bands | N/A | N/A | yes | N/A |
| IP code (level of dust/water resistance) | N/A | N/A | IP68 | IP67 |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.0 | 4.0 | 4.0 | 4.0 |
| Wi-Fi | yes | no | yes | yes |
| Built-in navigation system | no | no | yes | yes |
| 3G (UMTS) | N/A | no | no | N/A |
| 4G (LTE) | N/A | no | yes | N/A |
| NFC | N/A | no | yes | N/A |
| USB | N/A | yes | yes | yes |
| Charging connection | N/A | Proprietary USB Cable | Wireless | N/A |
| Wireless networking standard | N/A | N/A |
| N/A |
| Headphone connection | N/A | N/A | Bluetooth | N/A |
| GPS | N/A | N/A | yes | yes |
| GLONASS | N/A | N/A | yes | yes |
| Battery technology | Li-polymer | Li-Ion | Li-Ion | Li-polymer |
|---|---|---|---|---|
| Battery life (running) | 96.0 h | 168.0 h | 25.0 h | 35.0 h |
| Battery capacity | N/A | 150.0 mAh | 315.0 mAh | 280.0 mAh |
| Average battery life (standby) | N/A | 168.0 h | 150.0 h | 278.0 h |
| Wireless charging | N/A | N/A | yes | N/A |
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