The LPK25 works plug and play with Mac and PC and requires no software driver installation or wall power for operation. Sustain, octave up and down and tap tempo controls round out the LPK25's easy-to-learn layout. The LPK25 contains an arpeggiator, which steps through chords automatically, assisting musicians with creating quick melodic ideas. UPC 694318020937 is associated with product Akai Lpk25 Wireless Usb Keyboard Controller W/ Bluetooth Midi, find 694318020937 barcode image, product images. The diminutive keyboard is made up of 25 miniature, velocity-sensitive keyboard keys with synth action. The LPK25 is a scaled-down relative to the MPK series of keyboard performance controllers. Keyboard players who want to work with software on their computer will find that the LPK25 gives their laptop the keys they need to express themselves anywhere. It measures less than 13 inches across and weighs less than a pound to easily fit into a laptop case, backpack or messenger bag for extreme portability. The LPK25 laptop performance keyboard is a USB-MIDI controller for musicians, producers, DJs and other music creators. Melodic performance in the palm of your hand.