Wave is a ring that lets you control sound with motion. It gives you more control over your instruments and improves your workflow.
Previously the Wave was a little limited and could only communicate with your computer through a companion app. However, it has now found new compatibility with the WIDI Master, a MIDI-to-Bluetooth adapter from CME, which allows you to control all sorts of MIDI devices without the need for a computer.
You can find out more and purchase the Wave for $199 on its own or with the WIDI Master in a combo through Genki Instruments for $259.