Multi-function effects processor, the G2 FOUR, featuring reverb and tuner functions. - Model Name: G2 FOUR - Functions: Effects, Reverb, Tuner - Number of Operation Buttons: 3 footswitches - Display: LCD display - Connection Terminals: Input terminal, Output terminal Operates via USB power. Thank you for viewing. Operation confirmed, this is a listing for the main unit only. *Shipping will be after the 19th due to work commitments.