Features:
Pickup, tuner and equalizer system for acoustic guitars,  4-band EQ (BASS, MIDDLE, TREBLE, PRESENCE). LCD display, easy to read tuning information.
With volume control knob and low battery check LED.
Ideal for acoustic guitar players to improve the guitar sound.

Specifications:
Material: Plastic
Control Range: Bass –±12dB at 80Hz
                       Middle –±12dB at 800Hz
                       Treble — ±12dB at 15KHz
                       Presence — ±12dB at 3KHz
A4 frequency: 440HZ
Tuning Range: A0(27.5Hz) – C8 (4186.01Hz)
Power Supply: 1 * 9V Battery (not included)
Item Size: 6.5 * 5.8 * 2.5cm / 2.6 * 2.3 * 1in; 6 * 3.5 * 5.5cm / 2.4 * 1.4 * 2.2in
Item Weight: 90g / 3.2oz
Package Size: 10.5 * 7 * 7cm / 4.1 * 2.8 * 2.8in
Package Weight: 115g / 4.1oz

Note:
Battery is not included.

Package List:
1 x Guitar Pick-up System