SHUAIGUO M-VAVE Chocolate BT Wireless MIDI Controller, 4 Buttons, Portable, USB, Controller Only, Black

Specifications: Material: Metal Power Input: DC 5V Working Current: 45mA Battery: 300mAh APP: CubeSuite Item Size: 212 * 36 * 17mm / 8.35 * 1.42 * 0.67in Item Weight: 236g / 8.34oz Package Weight: 295g / 10.43oz Package Size: 22.5 * 4.5 * 4cm / 8.86 * 1.77 * 1.57in Packing List: 1 * Controller 1 * Charging Cable 1 * Manual (English) Note: It support a variety of electronic spectrum turning software: 1. Android System: you can turn pages by opening PDF or pictures. 2. iOS Pad or iOS Phone: you need to buy any of the following software: forScore, OnSong, Foxi PDF, NextPage, GoodNotes, MobileSheets, SongBook, unrealBook for opening PDF. And Paperless Music, piaScore for opening picture.