Features: 
With this equalizer, you spend less time tweaking controls and more time playing. 
Shape sound and eliminate feedback with 5 bands of equalization. 
With bass, middle 1, middle 2, treble, pres control knobs. 
Tone and volume control. 
Wide frequency range from 20 HZ to 20 kHZ. 
Auto and manual tuning mode. 
LED for effect on/off and battery check. 
Easy to read metronome on LCD display.
Powered by 9V Alkaline battery (not included). 

Specification: 
Input impedance: 2.2MΩ 
Frequency response: 20 HZ - 20 kHZ 
Control range: 
Bass: ± 12dB at 60 HZ 
Midd 1 : ± 12dB at 500 kHZ 
Midd 2 : ± 12dB at 600 kHZ 
Treble: ± 12dB at 3 kHZ 
Presence: ± 12dB at 10 kHZ 
Package size: 12 * 12 * 8cm / 4.7 * 4.7 * 3.1in 
Package weight: 151g / 5.32oz 

Package List: 
1 * 5 Band EQ Equalizer 
1 * Battery box 
1 * Piezo Pickup Line 
8 * Mounting screws