100% Brand new and high quality EQ 7545R pick-up equalizer system with 4 bands can be easily fitted into your acoustic guitar and it is essential to electrify and amplify their sound. Under the saddle pickup for acoustic guitar Pre-wired for easy assembly 4 bands plus volume control Supplied with a battery box, Low battery indicator Connecting wire with 2.5mm plug included Specifications: Presence Control: ±12dB at 8KHz Bass Control: ±12dB at 600Hz Middle Control: ±12dB at 600Hz Treble Control: ±12dB at 2.2KHz Frequency Response: 20Hz - 20KHz Power: 9V alkaline battery (Not included) Color: As the picture Pickup dimensions: approx. 10.5 x 4.7 x 6cm/4 x 1.9 x 2.4inches (L*W*H)