It is not the first time we saw the bracelet concept phone, this B-Mobile concept phone is created by Tao Ma for Lite On competition.

The bracelet concept phone has numeric key on its metal body, one part of the node can be seperated to answer incoming phone call. It even has built in memory and a earphone jack to let you use it as a music player. Description from the designer,

The bracelet will vibrate slightly when it receives messages, then you can take it off from your wrist and press the keystroke which looks like a diamond. You see, it is so easy to pick up or make a telephone.
Although the appearance of the bracelet looks ordinary - it still has plenty of functions. In addition, have you ever imagine listening to MP3 played from bracelet? When you are in the party, just show your special bracelet to your friends.

Source via yankodesign