Acoustic Guitar 4 Band Preamp Amplifier Equalizer EQ 7545R Piezo with Pickup

Does Not include a battery. Treble Contro: iA12Db At 2.2Khz. Input Impedance: 10Mo. Frequency Response: 20Hz - 20Khz. Pickup Dimensions: 10.5(L) X 4.7 (W) X 6(H)Cm.Pre-Wired For Easy Assembly, Includes Connecting Wire With 2.5Mm Plug. Low Battery Indicator.Specifications: Presence Control:iA12Db At 8Khz. Bass Control: iA12Db At 600Hz. Middle Control: iA12Db At 600Hz.Package Included: 1 Set EQ , 1 Pre-Amp, 1 Pickup Stick, 1 Connecting Wire With 2.5Mm Plug.