2013 NEW 4 Bands Guitar Preamp EQ Pickup Tuner Blue LCD Back Light W/Piezo -10B 100% brand new and unused Imput impedance:10Mohm, Frequency Response:20HZ-20KHZ Bass:  12dB at 80HZ, Midd:  12dB at 800KHZ, Treble:  12dB at 3KHZ Brilliance:  12dB at 15KHZ, Blue backlight LCD screen, Sizes:80mmx44mm Automatic low battery check LED,Auto Chromatic Tuning ,Power:9v Alkaline Battery (not included)