Quantum VJ is an 8-bit glitch-style electronic pendant, audio visualizer, and video generator. You can connect any sound source to this device via a mini-jack (synthesizer, player) or capture external sound with the built-in microphone (random conversations, wind, or music). It can also visualize some electromagnetic interference. There are 9 display modes that can be switched with a button. This is a great pendant decoration for techno parties.

More information can be found here: QVJ