  |  |  |  | |
| Editiorial reviews | ||||
| User rating |
| RAM Memory | 128.0 mB | N/A | 512.0 mB | 512.0 mB |
|---|---|---|---|---|
| Internal storage space | 256.0 GB | 8.0 GB | 4.0 GB | 4.0 GB |
| CPU cores | N/A | N/A | Dual Core | Single Core |
| CPU speed | N/A | N/A | 1.0 GHz | 0.8 GHz |
| Screen size | 1.54 in | 1.26 in | 1.2 in | 1.63 in |
|---|---|---|---|---|
| Display technology | LCD | LCD | OLED | OLED |
| Screen resolution | 240 x 240 px | 144 x 168 px | 360 x 360 px | 320 x 320 px |
| Type of glass | N/A | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | N/A | Monochrome | Colour screen | Colour screen |
| Touchscreen | N/A | N/A | yes | N/A |
| Built-in camera | yes | no | no | no |
|---|---|---|---|---|
| Accelerometer | yes | N/A | yes | yes |
| Heart rate monitor | yes | yes | yes | yes |
| Microphone | yes | yes | yes | yes |
| Gyroscope | yes | yes | yes | yes |
| Pedometer | yes | N/A | yes | N/A |
| Ambient Light Sensor | N/A | N/A | yes | N/A |
| Barometer | N/A | N/A | yes | yes |
| Altimeter | N/A | N/A | N/A | yes |
| Compass | N/A | N/A | N/A | yes |
| Phone Functionality | N/A | N/A | N/A | yes |
| Case diameter | 1.69 in | 1.56 in | 1.67 in | 1.45 in |
|---|---|---|---|---|
| Case height | 0.0 in | 1.19 in | 1.96 in | 2.23 in |
| Case thickness | 0.43 in | 0.44 in | 0.45 in | 0.44 in |
| Weight | 1.53 oz | 1.12 oz | 1.66 oz | 2.6 oz |
| Replaceable wrist bands | yes | N/A | N/A | yes |
| Watch case material |
| Plastic/Synthetic | Stainless steel | Stainless steel |
| Wrist band material |
| Silicone |
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| Colour of bracelet |
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| Anti scratch lens | yes | N/A | N/A | yes |
| Water resistance | N/A | yes | yes | yes |
| Fully waterproof | N/A | no | yes | yes |
| Dust resistant | N/A | N/A | yes | yes |
| IP code (level of dust/water resistance) | N/A | N/A | IP68 | IP68 |
| Wrist band width | N/A | N/A | N/A | 0.87 in |
| Bluetooth | yes | yes | yes | yes |
|---|---|---|---|---|
| Bluetooth version | 3.0 | 4.0 | 4.1 | 4.0 |
| Wi-Fi | yes | no | yes | yes |
| USB | yes | no | yes | yes |
| Charging connection | Proprietary USB Cable | N/A | Wireless | Wireless |
| Built-in navigation system | no | no | no | yes |
| 3G (UMTS) | N/A | no | no | no |
| 4G (LTE) | N/A | no | yes | yes |
| NFC | N/A | no | yes | yes |
| Wireless networking standard | N/A | N/A |
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| Headphone connection | N/A | N/A | Bluetooth | Bluetooth |
| GPS | N/A | N/A | N/A | yes |
| GLONASS | N/A | N/A | N/A | yes |
| Battery technology | Li-Ion | N/A | Li-Ion | Li-Ion |
|---|---|---|---|---|
| Battery capacity | 400.0 mAh | N/A | 250.0 mAh | 315.0 mAh |
| Average battery life (standby) | 240.0 h | N/A | 24.0 h | 150.0 h |
| Battery life (running) | 24.0 h | 154.0 h | 24.0 h | 25.0 h |
| Wireless charging | N/A | N/A | yes | yes |
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