Features: Acoustic guitar 2 bands pickup EQ equalizer system. Easy to use, just plug it into your amp, amp or other recording equipment. Be able to eliminate almost all external sound interference and not be influenced by sound reflections from nearby objects. Control Range: Bass: +/-12dB, Treble: +/-12dB 2-band tone controls (,TREBLE) for all guitarists looking to improve their sound. Specifications: Material: Plastic Weight: 80g Size: 5.6x5.2x5.6cm Control Range: Bass: +/-12dB Treble: +/-12dB Power Supply: 6F22 DC9V Battery(not including) Package Includes: 1 Set Guitar Pickup Kit note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to difference between different monitors, the picture may not reflect the actual color of the item.