What's in the box:

ammoon Heart-shaped Guitar Pickup Spruce Wood Piezo Contact Microphone Pickup 6.35mm Port for Guitar Ukulele Violin Banjo Mandolin Accessory (Standard)

Features:
It can be applied to folk, classical guitar, ukulele, violin, banjo, mandolin and so on.
Posted in different parts of the instrument have different pickup effect.
Directly bonded to the instrument panel via. double-sided adhesive, not to hurt your instrument.
It can be removed at any time, and then paste to use.
Without power, easy to install, cheap, pickup effect class.

Specifications:
Model: GMB628
Material: Spruce wood and piezo
Color: As shown
Interface: Standard 6.35mm jack
Cable Length: 73cm / 28.7inch
Item Size: 73 * 3.8 * 1.53cm / 28.7 * 1.5 * 0.6inch
Item Weight: 32g / 1.1oz
Package Size: 20 * 9 * 2cm / 7.9 * 3.5 * 0.8inch
Package Weight: 35g / 1.2oz

Packing List:
1 * Pickup