Amazon.com: Asmuse Wireless MIDI keyboard, 25 Keys USB MIDI Controller Keyboard with Bluetooth, Professional Mini MK3 with Beat Pad, Knobs and Keys (Black) : Musical Instruments
Developing MIDI applications on Android -
M-VAVE 25-Key MIDI Control Keyboard Portable USB Keyboard Controller with 25 Velocity Sensitive Keys 8 RGB Backlit Pads 8 Knobs - AliExpress