It does and it&#x27;s very good at it.<p>I bought a Mi-band specifically as a vibration alarm clock, as it&#x27;s cheaper than any other such thing on the market, it follows you around, being strapped to your wrist (so you can always feel the vibration when the time comes) and has this useful feature where it monitors your movements and tries to wake you up in your light sleep.<p>If you have a regular weekly wakeup schedule you only need the app once, to program the band over Bluetooth, then you can just wear it as a night accessory and charge it every few months.<p>I use it in combination with those yellow spongy ear plugs, to get a bit of silence (locking the door to my bedroom, so that any intruder would hopefully make enough noise to wake me up through the ear plugs) but I suppose there are many use cases.