Sony SmartWatch 2

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The Sony SmartWatch 2, also known as SW2, is a wearable device launched in late September 2013. The SW2 supports working together with any Android 4.0 (and higher) smartphone, unlike Samsung's competing Galaxy Gear smartwatch, which only works with a few of Samsung's own Galaxy handsets. The watch features an aluminum body and comes with the option of a silicone or metal wristband, but can be used with any 24mm wristband. It is 1.65 inches tall by 1.61 inches wide and 0.35 inch thick and weighs 0.8 ounces and sports a transflective LCD screen with a 220x176 resolution. The SW2 connects to the smartphone using Bluetooth, and supports NFC for easy pairing. It is rated IP57 so it can be submersed in water up to a metre for 30 minutes