Randon acoustic guitar pickup with the stick patch transducer works by contacting with the sound source directly, comes with double sided tape and self adhesive Velcro,it is able to eliminate interfering external sounds, you only need to stick it on instrument directly and it will bring you the clear sound.
The guitar pickup fits for many kinds of acoustic instruments, such as Guitar, Ukulele, Violin, Mandolin, Banjo, Kalimba, etc.