Nektar Impact GX 49, 49-key USB Keyboard, Velocity sensitive full size keys with ""Synth Action"", 4 Velocity curves, A Total of 14 assignable MIDI buttons, Transport controls: Play, Stop, Record, Rewind and Fast Forward, Advanced transport functions: Loop on / off, click on / off, Go To Locator and Undo, Backlit Octave and Transpose Shift button, Profound DAW integration incl. Track Volume / Track Select, Patch selection etc., Control of the mixer volume using the knobs, Powered by USB, Class Compliant for true plug and play, Connectors: sustain pedal (6.35 mm), USB, Included Bitwig 8-Track Software (Download), Compatible with Windows 7, 8, 10, MAC OSX 10.5 or higher, Linux Ubuntu 4.14, iOS compatible in conjunction with Apple Camera Connection Kit, Adjustments to all popular DAWs incl. Cubase, Nuendo, Logic, Reason, Bitwig, Studio One, Cakewalk Sonar, Digital Performer, Fruity Loops, Garageband and Reaper, Dimensions (W x D x H): 803 x 197 x 70 mm, Weight: 2.18 kg