Along with the Xperia Ultra Z, Sony also announced its second generation SmartWatch packing Bluetooth and NFC for easy pairing. Unlike the previous Sony SmartWatch, the new model eschews the plastic casing and replaces it instead with stainless steel and aluminum, meeting IP57 standards for water and dust resistance. There’s a brightness sensor to adjust the backlighting of the 1.6-inch 220 x 176 touchscreen, and Bluetooth 3.0 for hooking up to your phone or tablet. NFC will make pairing straightforward, and the SmartWatch 2 is expected to work with any Android 4.0+ device. Battery life is around four days on a full charge.