Break the barrier between Ableton Live and your creative flow with a Novation Launchpad.
 
A powerful button-matrix-style control surface for Ableton Live, FL Studio, and other music applications
64 pads let you launch clips, trigger samples, control levels, and perform other essential functions
RGB pad backlighting lets each pad change color to match your clips, tracks, and other content
Create colorful performances and custom instruments with advanced mapping capabilities
Lightweight and 100% USB bus powered for easy grab-and-go use
Build your dream control rig by combining multiple Launch series controllers
Includes Ableton Live Lite, Novation V Station and Bass Station plug-ins, and 4GB of Loopmasters samples
FREE Melodics Lessons: Use Melodics to improve your keyboard skills and hone your pad drumming skills
Integrates perfectly with the Novation Launchpad App for iOS
Class-compliant and USB bus-powered on Mac or PC

 
Specs
Pads: 64 x RGB backlit buttons, 8 x RGB system buttons, 8 x RGB function buttons
 MIDI I/O: USB
 USB: 1 x Type B
 Software: Ableton Live Lite, Bass Station VST, V Station VST, XLN Addictive Keys Instrument, Melodics Lessons (register for licenses)
 OS Requirements - Mac: OS X 10.9 or later
 OS Requirements - PC: Windows 7 or later
 Height: 0.98"
 Width: 9.45"
 Depth: 9.45"

 
More info: https://novationmusic.com/launch/launchpad-mk2