KQ-2 Piezo Contact Pickup Transducer with Volume Controller Tuner Audio Cable Sticker for Guitar Violin Banjo Mandolin Ukulele Stringed Instruments Universal

Features:Piezo pickup is sensitive enough to capture sound quickly.Push the button on tuner to choose tone and volume as you like.Easy to install, tear off sticker and fastened to the instrument without need of drilling hole.Passive design, without need for external power.Comes with an audio cable (3.5mm-6.5mm), approx. 3 meters in length, together with a piece of sticker.Design for most stringed instrument like guitar, violin, banjo, mandolin, etc.