  |  |  |  |  |
| Screen size | 1.4 in | N/A | 1.63 in | 2.0 in | 1.97 in |
|---|---|---|---|---|---|
| Display technology | OLED | OLED | OLED | OLED | LED |
| Screen resolution | 400 x 400 px | 96 x 64 px | 320 x 320 px | 360 x 480 px | 128 x 128 px |
| Type of glass | Sapphire glass | N/A | Gorilla Glass | N/A | N/A |
| Type of screen | N/A | N/A | Colour screen | Colour screen | N/A |
| Touchscreen | N/A | N/A | N/A | yes | N/A |
| Multi touch | N/A | N/A | N/A | yes | N/A |
| Case diameter | 1.65 in | 2.32 in | 1.45 in | 1.57 in | 1.97 in |
|---|---|---|---|---|---|
| Case height | 0.0 in | 1.18 in | 2.3 in | 2.29 in | N/A |
| Case thickness | 0.44 in | 0.35 in | 0.39 in | 0.49 in | 0.59 in |
| Wrist band width | 0.71 in | N/A | 0.87 in | N/A | N/A |
| Replaceable wrist bands | yes | N/A | N/A | yes | yes |
| Watch case material | Stainless steel | N/A | Stainless steel |
| Polyamide |
| Wrist band material |
| N/A | Rubber |
| Silicone |
| Anti scratch lens | yes | N/A | N/A | yes | yes |
| IP code (level of dust/water resistance) | IP67 | N/A | IP67 | IP67 | N/A |
| Weight | N/A | 1.45 oz | 2.4 oz | 2.36 oz | 2.82 oz |
| Colour of bracelet | N/A | N/A |
|
| N/A |
| Water resistance | N/A | N/A | yes | yes | yes |
| Fully waterproof | N/A | N/A | yes | yes | yes |
| Dust resistant | N/A | N/A | N/A | yes | N/A |
| Bluetooth | yes | yes | yes | yes | yes |
|---|---|---|---|---|---|
| Bluetooth version | 4.1 | 2.1 | 4.0 | 4.1 | 4.0 |
| Wi-Fi | yes | N/A | no | yes | N/A |
| USB | yes | yes | yes | yes | N/A |
| Charging connection | Proprietary USB Cable | N/A | N/A | microUSB | Proprietary USB Cable |
| 4G (LTE) | N/A | N/A | no | no | N/A |
| NFC | N/A | N/A | no | no | N/A |
| 3G (UMTS) | N/A | N/A | N/A | yes | N/A |
| Wireless networking standard | N/A | N/A | N/A |
| N/A |
| Headphone connection | N/A | N/A | N/A | 3.5 mm | N/A |
| Built-in navigation system | N/A | N/A | N/A | yes | N/A |
| GPS | N/A | N/A | N/A | yes | yes |
| GLONASS | N/A | N/A | N/A | yes | N/A |
| Battery technology | Li-Ion | Li-Ion | Li-Ion | Li-Ion | Li-Ion |
|---|---|---|---|---|---|
| Battery capacity | 300.0 mAh | 200.0 mAh | 300.0 mAh | 300.0 mAh | N/A |
| Average battery life (standby) | N/A | N/A | 144.0 h | 96.0 h | N/A |
| Battery life (running) | N/A | N/A | 144.0 h | 48.0 h | N/A |
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