Feature: 1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.3.LCD display makes it easy to read4.Play this with an acoustic amps ,and sounds nice5.Great replacements parts for your guitar6.Easy to install and good qualityfunction: 5Band EQ & LCD tuner and microphone Color: BlackInput Impedance:2.2M Frequency Response:20Hz~20KHzControl Range: Bass:12dB at 80Hz Middle:12dB at 800HzTreble:12dB at 3KHz Presence:12dB at 15KHzBLEND:PIEZO&C-MICBattery:9v snap (not included )Features:LCD Tuner Syste Phase Reverse SwitchBalance & Unbalance outputjack Features:Automatic low Battery check LEDFrom take microphoneDimension:L98 x W58mmWeight:875gPackage Include:5x 5Band EQ & LCD tuner and microphone Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.