Purchased new around 2014. Hardly used, in excellent condition. Operation confirmed. Requires a 9V battery. [Specifications] Copied and pasted from the manufacturer's official website ----- A dual-type footswitch that can switch between latch/unlatch and polarity. The two switches can also be used independently. Specs ■ Dual Footswitch ■ Latch/unlatch and polarity switching possible ■ The FS-6 is a compact and durable footswitch that can be used with devices compatible with the FS-5L/FS-5U. It's a model that integrates two footswitches, allowing you to switch between latch/momentary and also change polarity. ■ Controls: Pedal Switch A, B / Polarity Switch A, B / Mode Switch A, B ■ Connectors: Jack A, Jack B (standard jack), Jack A&B (TRS standard jack) ■ Power: 9V dry cell 006P / 9V (6F22 = manganese, 6LR61 = alkaline), Battery life during continuous use = approximately 70 hours for manganese batteries, approximately 100 hours for alkaline batteries (A, B always on, MODE = LATCH) * Battery life during continuous use varies depending on usage conditions. ■ Current consumption: 8mA (maximum) ■ Size/Weight: 188 (W) x 91 (D) x 43 (H) mm, 470g (including dry cell battery) ■ Accessories: Dry cell battery 006P / 9V (6F22), Instruction manual * Cables are not included. Manufacturer: BOSS