Features: Made of electronics and metals, the guitar pickup is strong and Enduring, ensures a long terms use. The pickup bar is used to receive the vibrations from the playing and transmit the vibrations to the equalizer. Comes with a tone control knob and a Volumes control knob, the equalizer can adjust the Volumes and tone. The 6.35mm output socket can connect recorder, the 3.5mm output socket can connect the headset, easy for exercises. Guitar equalizer pickup used to making simple silence guitar, and can used as guitar replacement. Specifications: Materials: Metal and Plastic Size: about 11.5x5.3x2.1cm/4.53x2.09x0.83inch Total Volumes: 0-12 Sound: 100Hz-6.02KHZ Earphone output socket: 3.5mm/0.14inch Output socket: 6.35mm/0.25inch Package Includes: 1set Guitar Pickup note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.