The boss of Xiaomi was pretty scarce on the whole "fitness" aspect of the Mi Band, so we don't really know what it will measure, save for serving as a pedometer because of the built-in accelerometer. You can, however, pair it to unlock your phone without pins, passwords and knock codes, just detecting it in the proximity, which is an added bonus. All that jazz is available in a "micro laser perforated" aluminum plate format, held around your wrist by a rich variety of colorful or stylish bands. Available for approximately 12 USD in China, the Mi Band should be making its grand entrance in the budding world of wearables in Q3. Any takers?