  |  |  |  |  |
| RAM Memory | 512.0 mB | 512.0 mB | 512.0 mB | 512.0 mB | 768.0 mB |
|---|---|---|---|---|---|
| Internal storage space | 4.0 GB | 4.0 GB | 4.0 GB | 4.0 GB | 4.0 GB |
| CPU cores | Single Core | Dual Core | Dual Core | Single Core | Dual Core |
| CPU speed | 0.8 GHz | 1.0 GHz | 1.0 GHz | 0.8 GHz | 1.0 GHz |
| Screen size | 1.63 in | 2.0 in | 1.2 in | 1.63 in | 1.2 in |
|---|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | OLED | OLED |
| Screen resolution | 320 x 320 px | 360 x 480 px | 360 x 360 px | 320 x 320 px | 360 x 360 px |
| Type of screen | Colour screen | Colour screen | Colour screen | Colour screen | N/A |
| Touchscreen | N/A | yes | yes | N/A | N/A |
| Multi touch | N/A | yes | N/A | N/A | N/A |
| Type of glass | N/A | N/A | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Built-in camera | yes | no | no | no | N/A |
|---|---|---|---|---|---|
| Microphone | yes | yes | yes | yes | yes |
| Gyroscope | yes | yes | yes | yes | yes |
| Accelerometer | N/A | yes | yes | yes | N/A |
| Ambient Light Sensor | N/A | yes | yes | N/A | N/A |
| Barometer | N/A | yes | yes | yes | yes |
| Heart rate monitor | N/A | yes | yes | yes | yes |
| Compass | N/A | yes | N/A | yes | N/A |
| Phone Functionality | N/A | yes | N/A | yes | yes |
| Pedometer | N/A | yes | yes | N/A | N/A |
| UV meter | N/A | yes | N/A | N/A | N/A |
| Altimeter | N/A | N/A | N/A | yes | N/A |
| Case diameter | 1.45 in | 1.57 in | 1.67 in | 1.45 in | 1.69 in |
|---|---|---|---|---|---|
| Case height | 2.23 in | 2.29 in | 1.96 in | 2.23 in | 1.76 in |
| Case thickness | 0.44 in | 0.49 in | 0.45 in | 0.44 in | 0.46 in |
| Weight | 2.6 oz | 2.36 oz | 1.66 oz | 2.6 oz | 2.36 oz |
| Watch case material | Stainless steel |
| Stainless steel | Stainless steel |
|
| Wrist band material | Rubber |
|
|
| Silicone |
| Replaceable wrist bands | N/A | yes | N/A | yes | N/A |
| Colour of bracelet | N/A |
|
|
|
|
| Anti scratch lens | N/A | yes | N/A | yes | N/A |
| Water resistance | N/A | yes | yes | yes | N/A |
| Fully waterproof | N/A | yes | yes | yes | N/A |
| Dust resistant | N/A | yes | yes | yes | N/A |
| IP code (level of dust/water resistance) | N/A | IP67 | IP68 | IP68 | IP68 |
| Wrist band width | N/A | N/A | N/A | 0.87 in | N/A |
| 3G (UMTS) | no | yes | no | no | N/A |
|---|---|---|---|---|---|
| 4G (LTE) | no | no | yes | yes | yes |
| Bluetooth | yes | yes | yes | yes | yes |
| Bluetooth version | 4.0 | 4.1 | 4.1 | 4.0 | 4.2 |
| Wi-Fi | no | yes | yes | yes | yes |
| NFC | yes | no | yes | yes | yes |
| USB | yes | yes | yes | yes | yes |
| Built-in navigation system | no | yes | no | yes | yes |
| Wireless networking standard | N/A |
|
|
| N/A |
| Charging connection | N/A | microUSB | Wireless | Wireless | N/A |
| Headphone connection | N/A | 3.5 mm | Bluetooth | Bluetooth | N/A |
| GPS | N/A | yes | N/A | yes | N/A |
| GLONASS | N/A | yes | N/A | yes | N/A |
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 315.0 mAh | 300.0 mAh | 250.0 mAh | 315.0 mAh | 300.0 mAh |
| Average battery life (standby) | 150.0 h | 96.0 h | 24.0 h | 150.0 h | 96.0 h |
| Battery life (running) | 25.0 h | 48.0 h | 24.0 h | 25.0 h | 48.0 h |
| Wireless charging | N/A | N/A | yes | yes | yes |
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