| Bluetooth | Bluetooth 4.0 |
| Bluetooth | Bluetooth 4.0 |
| Controls | Digital Crown |
| Display | Retina display with Force Touch |
| Display | 1.5-inch OLED |
| Image Sensor Format | Heart rate sensor |
| IP Rating | Splash and water resistant but not waterproof |
| Material | Stainless Steel / Space Black Stainless Steel |
| Material | Steel |
| Processor/Chipset | Apple S1 |
| RAM | 512MB |
| Resolution | 272x340 |
| Size | 38.6mm height x 33.3mm width x 10.5mm depth |
| Size | 1.52 x 1.21 x 0.41 inches |
| Storage | 8GB |
| Weight | 40g |
| Weight | 1.41 oz |
| Wi-Fi | 802.11 b/g |
| Wi-Fi | 802.11b/g/n 2.4GHz |
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