M-Key is a 49-key MIDI keyboard, a simplified version of the U-Key Mobiltone, but retaining the U-Key spirit, featuring ultra-thin full-action semi-weighted keys, joystick control, minus the LED display, mobile phone sound module, trigger pad, knob controller, U-CTRL and speaker. These modifications turn the M-Key into a pure, straightforward MIDI keyboard.

- 49 notes ultra thin full action semi-weighted keyboard, velocity sensitive
- 1 x Programmable Joystick
- 1 x function button, 2 x data entry button, 1 x slider (assignable), 1 x power LED
- 1 x USB port, 1 x MIDI out, 2 x pedal connect
- USB MIDI, class-compliant with Windows XP and Mac OS X
- Firmware upgraded via USB
- Universal pedal connector, full compatible with switch and expression pedal
- Note-key shortcut function