USB MIDI keyboard 25 keys Plugger Studio Pocket Key 25 25 keys with velocity assignable to the controllers PITCHUP and PITCHDOWN buttons Transposition function 3 velocity curves and constant velocity USB interface, adaptable to USB 2.0 (FULL SPEED). Power supplied by USB Compatible with Win10 / 8/7 / XP / Vista and Mac OS X. Driverless and hot-plug compatible Connectors: USB connector (mini B type) Power supply: USB bus power supply mode Current consumption: 100 mA Dimensions (W x D x H): 350 x 100 x 32 mm Weight: 418 gr Items supplied: USB cable