Features: This pick-up equalizer system with 5 bands can be easily fitted into your acoustic guitar and it is essential to electrify and amplify their sound. It features an actual loudness control so that you can precisely determine the site and get the right sound. This is essential for your guitar performance. Really change the mood and feel of a song or chord. Pre-wired for easy assembly. Features shape control and volume control. Connecting wire with 2.5mm plug included. Give yo u a comfortable touch through their unique design. Advanced manufacturing process, durable for long time use. Specifications: Condition: Brand New Material: Metal + Plastic Weight: Approx. 182g / 6.4oz Color: Black Power: 6F22 9V battery (not included). Bass Control: ± 12dB at 60Hz. Middle Control: ± 12dB at 500Hz. Treble Control: ± 12dB at 2.2KHz. Presence Control: ± 12dB at 8KHz. Frequency Response: 20Hz - 20KHz. Input Impedance: 10Mohm. Tuner Size: Approx. 9.8 * 4 * 6.1cm / 3.6 * 1.6 * 2.4in Power Output Platform Size: Approx. 6.5 * 5 * 5.5cm / 2.6 * 2.0 * 2.2in Pickup Stick Length: Approx. 7cm / 2.8in(Head), 35cm / 13.8in(Wire) Tuner Mounting Area Size: Approx. 5.1 * 8.8cm / 2.0 * 3.5in Power Output Platform Mounting Area Size: Approx. 5.2 * 4cm / 2.0 * 1.6in Package list: 1* Tuner 1* Power Output Platform 1* Pickup Stick 1* Fixed Cotton Pad 1* Plastic Fixation Bar 8 * Screw .