Material: Metal Is Batteries Included: No High-concerned chemical: None M-VAVE Chocolate Plus Wireless Midi Controller Keyboard 4 Buttons Foot Switch Supports Host Interface Control Function Pedal Product Feature Introduction: Portable midi pedal, small and exquisite; The display screen can directly feedback the commands you issued , intuitive and clear.; WINDOWS, MAC, IOS, ANDROID and other platforms are all compatible. The built-in host interface allows for direct control of the effector ; Advanced customization mode with switchable bank; Customization of keyboard combination keys Color: As Shown Material: Metal Package Contents: 1*pcs M-VAVE Chocolate Plus Wireless Midi Controller Keyboard+1*pcs instruction manual + 1*pcs UBS cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.