This is a CaimanTail loop by One Control. I am the second owner and have used it for about a month, but I am switching to a multi-effects unit, so I am offering it to someone else. I have confirmed that all functions are working without any problems. OC ONE CONTROL effector board with six switches and a digital display. - Model Name: OC ONE CONTROL - Number of Control Switches: 6 - Input/Output Terminals: Multiple effect terminals - Display: Digital display - Color: Black Thank you for looking.