Description Active tone control system, no noise, perfect for a electric violin. High quality silent EQ pick-up produces nice and charming sound. DIY your electric violin through the electric violin pickup outfit. With tone control volume control, easy to adjust. With 6.35mm output and 3.5mm headphone jack, convenient to connect. Color: Black Material: Plastic + metal Tone Control: 12dB Volume Control: 0-10 Frequency Response: 20Hz~20KHz Power Supply: 1 * 9V battery(not included) Item Weight: 62.3g/2.2oz Package Size: 13 * 13 * 4cm/5 * 5 * 1.6in Package Weight: 65.2g/2.3oz Note: This item is not including the battery. Package List: 1 Set Violin EQ Pickup (Not including battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.