[DOUBLE PIEZO ]Double piezo pickup, 6.35mm audio output jack.With tail pin plug, the guitar sound can be put into the stereo after installation. [WELL DESIGN]Attached to the inside of the instrument to receive the vibration of the resonator. [ADJUST TIMBRE AND VOLUME]Has the timbre and volume adjustment function,you can adjust the sound as you like.Suitable for guitar, ukulele, mandolin, banjo, etc. [GOOD QUALITY]Made of plastic material, which is wear-resistant, and also with exquisite design and workmanship. [QUALITY ASSURANCE] Our products are guaranteed by quality. If you have any questions, please feel to us and we will provide you with the solution in the first time. ASIN B07Y217H7N Material Metal, Plastic Brand Name Bnineteenteam Item Weight 0.06 Kilograms Part Number Bnineteenteam2h0qptob1w Manufacturer Bnineteenteam Package Weight 0.23 Kilograms Item Dimensions LxWxH 25.59 x 1.06 x 1.06 inches Item Package Dimensions L x W x H 5.16 x 2.48 x 2.24 inches