Scaled down optical volume with smooth audio taper, LED indication, easy access battery door & cold rolled steel housing. Measuring 6.75 inch. L x 4.5 inch. W x 2.75 inch. H this is the perfect volume for pedals boards when space is at a premium or when you just need a smaller pedal. Powers from one 9V battery or optional Morley adapter. LED Indication, cold-rolled steel housing, quick clip battery door and two-year warranty. Features include: · Optical Volume in size perfect for pedalboards · 6.75 inch. L x 4.5 inch. W x 2.75 inch. H · Studio quiet audio taper · Powers from one 9-volt battery or optional Morley 9V adapter · Cold-rolled steel housing, LED indication, quick clip battery door and two-year warranty · Works with guitar, bass or keys