  |  |  |  |  |
| Screen size | 1.3 in | 1.34 in | 1.25 in | 1.63 in | 1.2 in |
|---|---|---|---|---|---|
| Display technology | LCD | LCD | LCD | OLED | OLED |
| Screen resolution | 240 x 180 px | 300 x 300 px | 144 x 168 px | 320 x 320 px | 360 x 360 px |
| Type of glass | Gorilla Glass | Gorilla Glass | Gorilla Glass | Gorilla Glass | Gorilla Glass |
| Type of screen | Colour screen | N/A | Colour screen | Colour screen | N/A |
| Built-in camera | no | N/A | no | no | N/A |
|---|---|---|---|---|---|
| Accelerometer | yes | N/A | yes | yes | N/A |
| Altimeter | yes | N/A | N/A | yes | N/A |
| Ambient Light Sensor | yes | N/A | yes | N/A | N/A |
| Barometer | yes | N/A | N/A | yes | yes |
| Heart rate monitor | yes | yes | N/A | yes | yes |
| Compass | yes | N/A | yes | yes | N/A |
| Gyroscope | yes | yes | yes | yes | yes |
| Auto adjust to smartphone time | N/A | N/A | yes | N/A | N/A |
| Microphone | N/A | N/A | yes | yes | yes |
| Magnetometer | N/A | N/A | yes | N/A | N/A |
| Pedometer | N/A | N/A | yes | N/A | N/A |
| Phone Functionality | N/A | N/A | N/A | yes | yes |
| Case diameter | 1.58 in | 0.94 in | 1.59 in | 1.45 in | 1.69 in |
|---|---|---|---|---|---|
| Case height | 1.65 in | 0.94 in | 1.48 in | 2.23 in | 1.76 in |
| Case thickness | 0.44 in | N/A | 0.37 in | 0.44 in | 0.46 in |
| Weight | 1.55 oz | 1.31 oz | 1.5 oz | 2.6 oz | 2.36 oz |
| Replaceable wrist bands | yes | N/A | N/A | yes | N/A |
| Watch case material |
|
|
| Stainless steel |
|
| Wrist band material |
| Silicone |
|
| Silicone |
| Colour of bracelet |
|
|
|
|
|
| Water resistance | yes | N/A | yes | yes | N/A |
| Fully waterproof | no | N/A | yes | yes | N/A |
| Wrist band width | N/A | N/A | 0.87 in | 0.87 in | N/A |
| Anti scratch lens | N/A | N/A | yes | yes | N/A |
| Dust resistant | N/A | N/A | yes | yes | N/A |
| IP code (level of dust/water resistance) | N/A | N/A | N/A | IP68 | IP68 |
| 3G (UMTS) | no | N/A | no | no | N/A |
|---|---|---|---|---|---|
| 4G (LTE) | no | N/A | no | yes | yes |
| Bluetooth | yes | yes | yes | yes | yes |
| Bluetooth version | 4.0 | 4.0 | 4.0 | 4.0 | 4.2 |
| Wi-Fi | no | yes | no | yes | yes |
| NFC | no | N/A | no | yes | yes |
| USB | yes | N/A | yes | yes | yes |
| Built-in navigation system | no | no | no | yes | yes |
| GPS | yes | N/A | N/A | yes | N/A |
| Charging connection | N/A | N/A | Proprietary USB Cable | Wireless | N/A |
| Wireless networking standard | N/A | N/A | N/A |
| N/A |
| Headphone connection | N/A | N/A | N/A | Bluetooth | N/A |
| GLONASS | N/A | N/A | N/A | yes | N/A |
| Battery technology | Li-polymer | Li-polymer | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 167.0 mAh | N/A | 150.0 mAh | 315.0 mAh | 300.0 mAh |
| Average battery life (standby) | 120.0 h | N/A | 168.0 h | 150.0 h | 96.0 h |
| Battery life (running) | 120.0 h | 96.0 h | 168.0 h | 25.0 h | 48.0 h |
| Wireless charging | N/A | N/A | N/A | yes | yes |
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