Feature●Powered by built-in rechargeable lithium battery, it can last up to 48 hours when fully charged.●Equipped with pedal control and BT wireless connection.●It is suitable for tablets, mobile phones or computers, and can be used to operate image reversal, spectrum reversal, control of multimedia software, replacement of some function keys on the keyboard, etc.●There are a total of 7 operating modes, each with 7 corresponding indicator lights.●Supports multiple intelligent spectrum change software: photos/forScore/OnSong/Foxin PDF/NextPak/Image Library/GoodNotes/Mobile Sheets/SongBook/UnrealBook/Paperless Music/plaScore, etc.Description