Description: Guitar Pickup EQ 7545R 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 Compare to another 7545R: the item has a supporting tail ding. The sound is cleaner than the old one Suit for acoustic guitar, cigar box guitar Specification: 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: Yellow Material: Plastic Connecting wire with 2.5mm plug included Pickup dimensions: Approx. 10.3 x 4.6 x 6.1cm/4.05 x 1.81 x 2.4inch Package Includes: 1 x EQ 7545R Guitar pickup with Accessories( as pciture shown? Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement, there may be 1-2mm error in size