Meet The Needs Of Acoustic Guitars - Designed to meet the needs of acoustic guitars. The onboard preamp system features a soundhole mounted preamp with rotary controls for volume and tone. Quick, Solder-Free Installation - The pickup comes standard providing a quick, solder-free installation.Suitable for all steel and nylon string guitars. 100 hours Continuous Use - You can expect about 100hours of continuous use between battery changes. Produce A Perfect Bass - Can make 12" or 14" small size guitar produce a perfect bass. Great Gift for Music Lovers - Perfect for students, advanced players, Music Lovers, Children Gift. Mouthpiece pickup, sound hole adjustment pickup Colour: Black Material: ABS + PVC + copper + iron Size: 58.9 * 47.4 * 25.3mm (L * W * H) Product Weight: 55g Package Contents: 1 x main body 1 x output socket 1 x sucker 1 x battery connection port 1 x battery pack Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.