The Roland Mobile Cube is a portable PA system that allows you to connect microphones and instruments, and is packed with effects. - Brand: Roland - Model: Mobile Cube - Features: Microphone, keyboard/instrument/guitar connection - Volume Control: Volume knob - Effects: Chorus, delay, reverb - Power: AC adapter included, also runs on AA batteries. Output: Equipped with 2.5W + 2.5W custom speakers Dimensions, Weight: 28W x 10.8D x 17.7H cm, 2.4 kg *Operation confirmed* I have used it about 10 times, but I am selling it because I don't use it often. The condition is good, but there are a few small scratches. Thank you for looking. Thank you.