  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| RAM Memory | 512.0 mB | 512.0 mB | 512.0 mB | 512.0 mB |
|---|---|---|---|---|
| Internal storage space | 4.0 GB | 4.0 GB | 4.0 GB | N/A |
| CPU cores | N/A | Dual Core | Dual Core | Dual Core |
| CPU speed | N/A | 1.0 GHz | 1.0 GHz | N/A |
| Screen size | 1.4 in | 1.63 in | 1.63 in | 1.2 in |
|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | OLED |
| Screen resolution | 400 x 400 px | 320 x 320 px | 320 x 320 px | 360 x 360 px |
| Type of glass | Sapphire glass | Gorilla Glass | Gorilla Glass | N/A |
| Type of screen | N/A | Colour screen | Colour screen | N/A |
| Touchscreen | N/A | N/A | N/A | yes |
| Accelerometer | yes | yes | yes | yes |
|---|---|---|---|---|
| Barometer | yes | N/A | N/A | N/A |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | yes | yes | N/A |
| Gyroscope | yes | yes | yes | yes |
| Pedometer | yes | N/A | N/A | yes |
| Built-in camera | N/A | yes | no | N/A |
| Ambient Light Sensor | N/A | N/A | N/A | yes |
| Case diameter | 1.65 in | 1.45 in | 1.49 in | 1.54 in |
|---|---|---|---|---|
| Case height | 0.0 in | 2.3 in | 2.31 in | N/A |
| Case thickness | 0.44 in | 0.39 in | 0.39 in | 0.43 in |
| Wrist band width | 0.71 in | 0.87 in | N/A | N/A |
| Replaceable wrist bands | yes | N/A | N/A | N/A |
| Watch case material | Stainless steel | Stainless steel |
|
|
| Wrist band material |
| Rubber | Rubber | Silicone |
| Anti scratch lens | yes | N/A | N/A | N/A |
| IP code (level of dust/water resistance) | IP67 | IP67 | IP67 | N/A |
| Weight | N/A | 2.4 oz | 1.94 oz | 1.48 oz |
| Colour of bracelet | N/A |
|
| N/A |
| Water resistance | N/A | yes | yes | N/A |
| Fully waterproof | N/A | yes | N/A | yes |
| Dust resistant | N/A | N/A | N/A | yes |
| Operating system |
|
|
| Android 4.4+ |
|---|---|---|---|---|
| Smartphone remote features | Voice Control | N/A | Voice Control |
|
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 4.1 | 4.0 | 4.0 | 4.0 |
| Wi-Fi | yes | no | no | yes |
| USB | yes | yes | yes | N/A |
| Charging connection | Proprietary USB Cable | N/A | N/A | Wireless |
| 4G (LTE) | N/A | no | no | N/A |
| NFC | N/A | no | no | yes |
| Infrared (IR) | N/A | N/A | yes | N/A |
| Headphone connection | N/A | N/A | N/A | Bluetooth |
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|
| Battery capacity | 300.0 mAh | 300.0 mAh | 300.0 mAh | 250.0 mAh |
| Average battery life (standby) | N/A | 144.0 h | 144.0 h | 48.0 h |
| Battery life (running) | N/A | 144.0 h | 48.0 h | N/A |
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