Apple Watch (1st generation) 38mm A1553 Specs

Battery Life Up to 18 hours
Bluetooth Bluetooth 4.0
Display Retina display with Force Touch
Image Sensor Format Heart rate sensor
IP Rating Splash and water resistant but not waterproof
Material Stainless Steel / Space Black Stainless Steel
Size 38.6mm height x 33.3mm width x 10.5mm depth
Weight 40g
Wi-Fi 802.11b/g/n 2.4GHz
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