The Akai CS-M02 is a compact and lightweight USB MIDI controller designed for musicians and composers who are constantly on the go. It features 25 velocity-sensitive keys, eight virtual drum pads with backlit buttons, and four assignable knobs for real-time parameter control. The controller also has a built-in arpeggiator, sequencer, and octave and transpose buttons for added functionality. Additionally, it has USB-MIDI connectivity and runs on AC or battery power for maximum portability. Overall, the Akai CS-M02 is a versatile and affordable option for musicians who require a compact and user-friendly MIDI controller for studio or live performance use.