BOSS SD-1 Overdrive pedal. This is a super-classic effector that enriches guitar sound. This is the 40th-anniversary model. The black enclosure adds a special feel to your board. *Comes with an outer box printed with the 40th-anniversary logo, instruction manual, etc. From a non-smoking environment. - Model Name: SD-1-4A - Brand: BOSS - Type: Overdrive - Input Terminals: 1/4 inch jack - Output Terminals: 1/4 inch jack - Power: 9V battery type