100% brand new and high quality Features: Under the saddle pickup for acoustic guitar Prewired for easy assembly 3 bands plus volume control Supplied with a battery box (9v battery not included) Connecting wire with 2.5mm plug included Low battery indicator Specification: Bass Control: +/12dB at 600Hz Middle Control: +/12dB at 600Hz Treble Control:+/12dB at 2.2KHz Frequency Response: 20Hz 20KHz Material: Plastic Color: Black Size:app. 9.5 x 4.3 x 5.8cm / 3.74 x 1.69 x 2.28in Quantity: 1 set Note: Transition: 1cm=10mm=0.39inch No retail package. Please allow 12cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Guitar EQ Preamp Pickup Piezo 1 x Battery Box 1 x Mounting Screws Set(other accessories demo in the picture is not included.)