About Products: 1. This top performance, wide-range, piezo transducer system is the perfect way to amplify a variety of instruments. such as piano, grand piano, harp, dulcimer, double bass, cello, acoustic guitars, mbiras, kalimbas, thumb pianos and many others. 2. Has the advantage of being able to eliminate interfering external sounds and not be influenced by sound reflections from nearby objects. Specifications: Cable length: Approx. 32cm/ 12.6in Jack: 1/4' Color: Black & red Package Content: 3 x Piezo Contact Microphone Pickup