Piezo Pickup Volume Adjustable Mini Self Adhesive Piezo Contact Microphone Pickup for Acoustic Guitar Ukulele Violin 1[Professional Piezo Pickup] This piezo pickup is designed as a contact microphone, delivering professional level sound reproduction by eliminating external interference and minimizing sound reflections from nearby objects. 2[Adjustable Volume] The adjustable volume feature prevents unwanted noise and feedback, allowing your instrument to produce exceptional sound quality while maintaining authenticity. 3[Easy to Install] The self adhesive design of this pickup allows for easy installation on any part of the instrument without causing any damage to the surface. 4[Standard Plug] The pickup cable features a 2.5mm male mini plug for connecting to the pickup and a 6.35mm male plug for connecting to speakers or amplifiers. 5[Mini Piezo Pickup] This mini sized piezo pickup is suitable for acoustic guitars, ukuleles, violins, and more, providing excellent sound reproduction without the need for batteries. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.