QY22 sequencer with multi-function buttons and LCD screen. - Model Name: QY22 - Connection Terminals: LINE OUT, MIDI IN/OUT - Display: LCD screen - Button Layout: Multi-function buttons, transport controls - Number of Tones: Equipped with a variety of tones - Power: DC 9V Thank you for viewing. Fully functional. I have confirmed that it works with both batteries and an adapter. There is a faint 2mm stain on the center left of the LCD screen, but it is not noticeable during operation. Included Accessories: Outer box Adapter PA-3B All manuals Soft case