Bluetooth Page Turner Foot Pedal by Coda Music Technologies Hands-free music reading on iPads, Android tablets, MAC, and PC Left & Right footswitches emulate arrow keys, PageUp/PageDown, and mouse clicks Compatible with popular sheet music, tablature, and chord chart apps for reading music and lyrics 9V battery with 150 hour charge or 9VDC to power your pedal and your tablet Autorepeat function for fast scrolling and browsing through set lists