Rapidly-growing Chinese manufacturer Xiaomi announced its first wearable today, the Mi Band. While it’s a fitness band rather than a smartwatch, it does have one smartwatch-style feature: it can be used instead of a passcode to unlock Mi phones.

The waterproof Mi Band measures activity levels and sleep patterns, has a smart sleep-cycle alarm and claims to have a 30-day battery-life. Amazingly, it will be going on sale in China and Singapore for the equivalent of just $13 …  expand full story