What's in the box:

Self-adhesive Guitar Pickup Transducer Prewired Amplifier with 6.35mm Output Jack for Acoustic Guitar Ukulele Violin Cajon African Drum Kalimba (Brown)

Features:
Wooden pickup for acoustic guitar, ukulele, violin, cajon, African drum and other vocal musical instruments.
Self-adhesive design, quick and easy installation, will not cause any damage to your musical instrument.
With 6.35mm output jack for connecting amplifier to get more resonant musical sound.
Compact size, easy to carry; you can stick it to different position of musical instrument to get the sound you like.
Excellent pickup, no tone decay and no tone distortion.

Specifications:
Output: 6.35mm jack
Item Size: 4.2 * 5.5 * 2cm / 1.7 * 2.2 * 0.8in
Item Weight: 37g / 1.3oz
Package Size: 14 * 10.5 * 3cm / 5.5 * 4.1 * 1.2in
Package Weight: 55g / 1.9oz

Note:
The guitar showed in the picture is not included.

Package List:
1 * Pickup
4 * Stickers