Xiaomi showcased the MiKey, which is basically a 3.5mm plug designed to work with your Xiaomi smartphone. Not only will it protect your smartphone from dust, but it’ll actually act as an accessory using which you can control your device. The design is pretty straightforward — there’s just one button on the plug, which also helps keep it limited in size....
Xiaomi MiKey - 3.5mm dust-plug with added functionality
Xiaomi MiKey - 3.5mm dust-plug with added functionality