Features:- A 2 band EQ with volume control
- Compact size makes it easy to install into a guitar
- Detect the state of the battery automatically
- LED indicator shows battery condition
- Start automatically when connecting， shut down automatically when pulling out

Specifications:
- Input Impedance: 10M Ohm
- Frequency Response: 20Hz - 20KHz
- Control Range: Low: + / - 12dB at 100Hz; High: + / - 12dB at 3KHz
- Power Supply: 1 x 9V Battery ( Included ) Remote Control: No Package weight: 0.278 kg
Product Size(L x W x H): 8.00 x 5.50 x 3.50 cm / 3.15 x 2.17 x 1.38 inches
Package Size(L x W x H): 16.00 x 9.00 x 5.00 cm / 6.3 x 3.54 x 1.97 inches Package Contents: 1 x Guitar Equalizer， 1 x Battery Box， 1 x 9V Battery， 1 x Piezo Pickup Line， 2 x Cut-out Template， 8 x Mounting Screw， 1 x Bilingual Manual in English and Chinese