MIDI INSTRUMENT CONTROLLER Korg Controller nanoKEY Studio. 25-key keyboard with speed sensitivity (four speed curves). 8 patches (with sensitivity to speed, four speed curves). 8 buttons, XY touch panel. Eight + / - buttons, Sustain button, Touch Scale button, XY button, Pitch / Mod button, Scene button, Shift / Tap buttons, Arp button, Chord Pad button, Easy Scale button, Scale Guide button. Octave range -4- + 4. 8 Scene Memories. USB micro jack connection. Wireless protocol: Bluetooth Low Energy (Meets the Apple Bluetooth Low Energy MIDI specification). USB bus power (when connected via USB) and two AA batteries. Duration of Batteries approximately 10 hours. Dimensions (W x D x H): 278 mm x 160 mm x 33 mm. Weight (without batteries): 471 g. Included items: USB cable, KORG Software Bundle code, two AA batteries to check operation.