What's in the box:

Acoustic Guitar 4-Band EQ Equalizer Tone and Volume Amplifier Preamp Piezo Pickup 6.35mm XLR with LCD Display (1)

Features:
Pickup with 4 bands EQ, it is suitable for classical folk guitars.
Bass, middle, treble and presence control knobs.
Built-in tuner with LED display.
With 6.35mm & XLR output jacks for connecting the speaker.
Powered by one 9V battery and with low battery indicator (battery is not included).

Specifications:
Pick-up: Piezo Ceramic Pick-up
Input impedance: 10MO
Frequency Response: 20Hz-20KHz
Control Range: Bass: (+/-)12dB at 60Hz, Middle: (+/-)12dB at 650Hz, Treble: (+/-)12dB at 2.2KHz, Presence: (+/-)12dB at 10KHz
Output Jack: 6.35mm & XLR output jacks
Power Supply: 1 * 9V battery(not included)
Item Size: 5.3 * 5.3 * 3 cm / 2.1 * 2.1 * 1.2in; 5.5 * 4.5 * 5.5cm / 2.2 * 1.8 * 2.2in
Item Weight: 63g / 2.2oz; 35g / 1.2oz
Package Size: 17.3 * 11.5 * 4.5cm / 6.8 * 4.5 * 1.8in
Package Weight: 109g / 3.8oz

Note:
Battery is not included.

Package List:
1 * Guitar Pick-up System