Wej is a musical accessory for your iPad or iPhone. It's a solid base to produce sound and charge your device. It has two USB Midi ports for connecting controllers and a bright light show to go along with your music. This app is the controller and bridge for the hardware. Wej features: -Solid non slip quality silicon base. -2 Low latency USB ports that allow you to connect midi controller devices wirelessly. -1 USB charging port. -48 Full color RGB LEDS. -Ableton link support for light show synchronization.