What's in the box:

Fishman Classic 4 Band Preamp Pickup Brilliance Tone Acoustic Guitar Pickup (Standard)

The pickup has 4-band tone controls of bass, middle, treble and brilliance. Small size, easy to control, it fits for many guitars.

Features:
4-band tone controls, bass, middle, treble and brilliance.
The pre-amp is switched on only when a jack is plugged in.
Low cell indicator.
Suitable for all guitar to improve sound.
Small footpint for easy access to control.

Specifications:
Material: ABS
Color: Black
Cell: 2 x 9V cells (not included)
Nominal Input Level: -18 dBV
Input Overload: -4dBV (20 Hz- 20 kHz)
Input Impedance: 20MOhm
Output Impedance: Less than 3.5k Ohm
Nominal Output Level: -6dBV
THD: Less than .04%, -18dBV input
Signal to Noise Ratio: 77dB
Current Drain: Less than 1.9mA
Bass Control: 12dB at 60Hz, 3dB at 350Hz
Treble Control: 12dB at 10kHz, 3dB at 2.4kHz
Middle Control: 12dB at 700Hz (3dB bandwidth at 1kHz)
Brilliance Control: 9dB at 10kHz (3dB bandwidth at 7kHz)
Package Weight: 100g / 3.53ounces
Package Size: 80 * 55 * 45mm / 3.15 * 2.17 * 1.77in

Package List:
1 * Pickup
1 * Tail Nail
1 * Label
1 * Strap
4 * Screw