This is Showing, a new wearable sign language translator.
It has the ability to translate sign language gestures into voice, and voice into text.
The device will make it easier for deaf people to communicate with hearing people, and vice versa.
The wearable armband detects the muscle actions of the wearer, and simultaneously converts it into speech through a small speaker.
It can also detect speech from others and covert it into text that appears on the armband.
The inventors are two university students from Beijing: Wang Nana and Huang Shuang.
Wang said she had a friend with a hearing impairment, and wanted to do something to help communication.
In April, the invention won the first prize in an open design challenge by the UNDP and the Chinese tech company Baidu.
The armband can translate 200 Chinese Sign Language gestures, but more are added each day.
So far, the device is not for sale, but developers hope that it will be soon.