Pickup with 4 bands EQ, it is suitable for classical folk guitars. Bass, middle, treble and presence control knobs. Built-in tuner with LED display. With 6.35mm and XLR output jacks for connecting the speaker. Powered by one 9V battery and with low battery indicator (battery is not included). Pick-up: Piezo Ceramic Pick-up Input impedance: 10M Frequency Response: 20Hz-20KHz Control Range: Bass: ()12dB at 60Hz, Middle: ()12dB at 650Hz, Treble: ()12dB at 2.2KHz, Presence: ()12dB at 10KHz Output Jack: 6.35mm and XLR output jacks Model Number: SE-4N Type: Pickup Product Name: 4 Band acoustic guitar preamp for: Folk Guitar work by: 1 x 9V Battery (Not Included) colour:black Material:Plastic and electronics size:69.5x41.5mm Package Contents: 1 x pickup 1 x battery box 1 x pickup stick 1 x clip 1 x screw set Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. 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.