  |  |  |  |  |
| RAM Memory | 512.0 mB | N/A | 32.0 mB | 512.0 mB | 768.0 mB |
|---|---|---|---|---|---|
| Internal storage space | 4.0 GB | 4.0 GB | 0.06 GB | 4.0 GB | 4.0 GB |
| CPU cores | Dual Core | N/A | N/A | Single Core | Dual Core |
| CPU speed | 1.2 GHz | N/A | N/A | 0.8 GHz | 1.0 GHz |
| Touchscreen | yes | N/A | N/A | N/A | N/A |
|---|---|---|---|---|---|
| Screen size | 1.63 in | 1.34 in | 0.95 in | 1.63 in | 1.3 in |
| Display technology | OLED | LCD | OLED | OLED | OLED |
| Screen resolution | 320 x 320 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 | N/A | Colour screen | Colour screen |
| Built-in camera | no | N/A | N/A | no | no |
|---|---|---|---|---|---|
| Heart rate monitor | yes | yes | yes | yes | yes |
| Microphone | yes | N/A | yes | yes | yes |
| Compass | yes | N/A | N/A | yes | yes |
| Gyroscope | yes | yes | yes | yes | yes |
| Phone Functionality | N/A | N/A | yes | yes | yes |
| Accelerometer | N/A | N/A | N/A | yes | N/A |
| Altimeter | N/A | N/A | N/A | yes | N/A |
| Barometer | N/A | N/A | N/A | yes | yes |
| Case diameter | 1.57 in | 0.94 in | 1.57 in | 1.45 in | 1.81 in |
|---|---|---|---|---|---|
| Case height | 2.01 in | 0.94 in | 1.18 in | 2.23 in | 1.93 in |
| Case thickness | 0.37 in | N/A | 0.53 in | 0.44 in | 0.51 in |
| Wrist band width | 1.54 in | N/A | N/A | 0.87 in | N/A |
| Weight | 2.65 oz | 1.31 oz | 1.41 oz | 2.6 oz | 2.19 oz |
| Replaceable wrist bands | yes | N/A | N/A | yes | N/A |
| Watch case material | Stainless steel |
| Plastic/Synthetic | Stainless steel |
|
| Wrist band material | Leather | Silicone | Silicone |
|
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| Colour of bracelet |
|
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|
|
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| Anti scratch lens | yes | N/A | N/A | yes | N/A |
| Water resistance | yes | N/A | N/A | yes | yes |
| Fully waterproof | no | N/A | N/A | yes | no |
| IP code (level of dust/water resistance) | IP55 | N/A | IP67 | IP68 | IP68 |
| Dust resistant | N/A | N/A | N/A | yes | N/A |
| Operating system |
| Proprietary OS | Pebble OS | Tizen OS | Tizen OS |
|---|---|---|---|---|---|
| Smartphone remote features |
| N/A | N/A | N/A | N/A |
| 4G (LTE) | no | N/A | N/A | yes | no |
|---|---|---|---|---|---|
| Bluetooth | yes | yes | no | yes | yes |
| Bluetooth version | 4.0 | 4.0 | 4.1 | 4.0 | 4.2 |
| Wi-Fi | no | yes | yes | yes | yes |
| NFC | no | N/A | N/A | yes | yes |
| USB | yes | N/A | yes | yes | yes |
| Charging connection | microUSB | N/A | N/A | Wireless | N/A |
| Built-in navigation system | yes | no | yes | yes | yes |
| GPS | yes | N/A | yes | yes | yes |
| GLONASS | no | N/A | N/A | yes | yes |
| 3G (UMTS) | N/A | N/A | yes | no | yes |
| Wireless networking standard | N/A | N/A | N/A |
|
|
| Headphone connection | N/A | N/A | N/A | Bluetooth | N/A |
| Battery technology | Li-polymer | Li-polymer | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 378.0 mAh | N/A | 130.0 mAh | 315.0 mAh | 380.0 mAh |
| Average battery life (standby) | 24.0 h | N/A | N/A | 150.0 h | 96.0 h |
| Battery life (running) | N/A | 96.0 h | 144.0 h | 25.0 h | 96.0 h |
| Wireless charging | N/A | N/A | N/A | yes | yes |
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