Features 1、Piezo pickup is sensitive enough to capture sound quickly. 2、Push the button on tuner to choose tone and volume as you like. 3、Easy to install, tear off sticker and fastened to the instrument without need of drilling hole. Specification This pickup is suitable for most stringed instrument like guitar, violin, banjo, mandolin, etc. Get one and you will benefit from having one or more! 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. Specifications: Pickup jack: 3.5mm / 0.14in Pickup cable length: 100cm / 3.3ft Audio cable length: 300cm / 9.8ft Tuner size: Approx. 6 * 2.5 * 2cm / 2.4 * 1 * 0.8in Package size: 13.5 * 9.5 * 3cm / 5.3 * 3.7 * 1.2in Package weight: 112g / 4oz Package List: 1 * Pickup 1 * Volume & Tone Controller 1 * Audio Cable 1 * Sticker Package List 1 * Pickup 1 * Volume & Tone Controller 1 * Audio Cable 1 * Sticker