Mooer Free Step, Mini wah / volume effect pedal, Both effects can be used separately or simultaneously, 2 Operating modes (activation via pressure sensors or switches), Custom inductor for wide range of wah sounds, Controller for Q and Min Volume, 3-Way slide switch for selecting the pedal mode (Wah / Vol / W & V), Slide switch for selecting the operation mode (sensor / switch), Status LED, Metal housing, 6.3mm mono jack input / output, Power supply via optional 9 V DC power supply with 2.1 x 5.5 mm barrel connector and polarity (-) inside (Mooer PDNW-9V2A-MP - not included), Current consumption 70 mA, Dimensions (L x W x H): 155 x 73 x 53 mm (toe position), Weight: 540 g@+*Note:* No battery operation possible.