What's in the box:

Acoustic Guitar Sound Hole Pickup Dual Pickup Modes Piezo + Mic Supports Volume Tone Adjusting Phase Function Easy Installation for 36-42 Inch Classic Folk Guitars (1)

Features:
Acoustic guitar sound hole pickup for 36-42 inch classic guitars & folk guitars.
Dual pickup modes(pickup stick & Mic), and the volume of Mic can be adjusted.
With TONE & VOLUME adjusting knobs, supports PHASE function.
Easy and quick installation, just hitch the pickup to rim of guitar sound hole, no need to cut holes on your guitar.
Exquisite metal & plastic shell design, high-quality circuit board with shielded layer, low noise and strong anti-interference.

Specifications:
Fits for: 36-42 inch acoustic guitar
Power Supply: 2 * CR2032 Batteries(Included)
Item Size: 8.3 * 6 * 3cm/ 3.3 * 2.4 * 1.2in
Item Weight: 58g/ 2oz
Package Size: 13.5 * 12 * 4.5cm/ 5.3 * 4.7 * 1.8in
Package Weight: 175g/ 6.2oz

Note:
Battery is not included.

Package List:
1 * Pickup
1 * Pickup Stick
1 * Endpin Jack
1 * Cable Clip
2 * CR2032 Batteries