Onboard easy to read 7-segment LED tuner Bass and Treble controls for enhanced tone shaping Volume control, Phase switch Low battery indicator Low profile control knobs Power: 9V Battery(not included) Size Onboard:51mm x 51mm (2inch x 2inch) Jack board: 48.8mm x 48.9mm (0.189inch x 0.19inch) Color: Black Material: Plastic+Metal Package Contents: 1set x Guitar Pickup Only the above package content, other products are not included. Note: Light reflection 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.<br> 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.