Features:4bands EQ
Input Impendance:22MΩ
Frequency Response: 20Hz~20KHz
Battery check S/W
Battery supply:9V battery
Battery life:700hours
Pick-up: Piezo Ceramic Pick-up
Control Range:
Bass: +/-12dB at 60Hz
Middle: +/-12dB at 600Hz
Treble: +/-12dB at 2.2KHz
Presence: +/-12dB at 8KHz
Dimensions: W46mm*L103mm (WxL)