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RAM Memory | 512.0 mB | 512.0 mB | 512.0 mB | 768.0 mB | 512.0 mB |
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Internal storage space | N/A | 4.0 GB | 4.0 GB | 4.0 GB | N/A |
CPU cores | N/A | Dual Core | Single Core | Dual Core | Quad Core |
CPU speed | N/A | 1.0 GHz | 0.8 GHz | 1.0 GHz | N/A |
Screen size | 1.63 in | 1.2 in | 1.63 in | 1.3 in | 1.6 in |
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Display technology | OLED | OLED | OLED | OLED | N/A |
Screen resolution | 320 x 320 px | 360 x 360 px | 320 x 320 px | 360 x 360 px | 320 x 320 px |
Multi touch | yes | N/A | N/A | N/A | N/A |
Touchscreen | N/A | yes | N/A | N/A | N/A |
Type of glass | N/A | Gorilla Glass | Gorilla Glass | Gorilla Glass | N/A |
Type of screen | N/A | Colour screen | Colour screen | Colour screen | N/A |
Case diameter | 2.64 in | 1.67 in | 1.45 in | 1.81 in | 1.97 in |
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Case thickness | 0.43 in | 0.45 in | 0.44 in | 0.51 in | 0.39 in |
Wrist band width | 0.87 in | N/A | 0.87 in | N/A | N/A |
Weight | 2.57 oz | 1.66 oz | 2.6 oz | 2.19 oz | 1.59 oz |
Watch case material | Stainless steel | Stainless steel | Stainless steel |
| Stainless steel |
Water resistance | yes | yes | yes | yes | yes |
Case height | N/A | 1.96 in | 2.23 in | 1.93 in | N/A |
Wrist band material | N/A |
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Colour of bracelet | N/A |
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| N/A |
Fully waterproof | N/A | yes | yes | no | yes |
Dust resistant | N/A | yes | yes | N/A | yes |
IP code (level of dust/water resistance) | N/A | IP68 | IP68 | IP68 | N/A |
Replaceable wrist bands | N/A | N/A | yes | N/A | yes |
Anti scratch lens | N/A | N/A | yes | N/A | yes |
Operating system | Android 2.3+ |
| Tizen OS | Tizen OS |
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Smartphone remote features |
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| N/A | N/A |
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Bluetooth | yes | yes | yes | yes | yes |
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Bluetooth version | 4.0 | 4.1 | 4.0 | 4.2 | 4.0 |
Charging connection | Proprietary USB Cable | Wireless | Wireless | N/A | microUSB |
3G (UMTS) | N/A | no | no | yes | N/A |
4G (LTE) | N/A | yes | yes | no | N/A |
Wi-Fi | N/A | yes | yes | yes | yes |
Wireless networking standard | N/A |
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| N/A |
NFC | N/A | yes | yes | yes | yes |
USB | N/A | yes | yes | yes | N/A |
Headphone connection | N/A | Bluetooth | Bluetooth | N/A | Bluetooth |
Built-in navigation system | N/A | no | yes | yes | N/A |
GPS | N/A | N/A | yes | yes | yes |
GLONASS | N/A | N/A | yes | yes | N/A |
Battery capacity | 315.0 mAh | 250.0 mAh | 315.0 mAh | 380.0 mAh | 420.0 mAh |
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Average battery life (standby) | 36.0 h | 24.0 h | 150.0 h | 96.0 h | 48.0 h |
Wireless charging | N/A | yes | yes | yes | N/A |
Battery technology | N/A | Li-Ion | Li-Ion | Li-Ion | Li-polymer |
Battery life (running) | N/A | 24.0 h | 25.0 h | 96.0 h | N/A |