Adeline AD-20 is practical Electronic Pickup which beginners can use electronic guitar with simple attachment without any modification or damageWhen you don't play it， you can separate the electronic cord and keep it away from the body.Suitable for: acoustic instruments such as guitar，ukulele violin， mandolin， Mandolin Banjo Guzheng Erhu etc. Advantage:Don't need to installation，can eliminate interfering external sounds and not be influenced by sound reflections from nearby objects， can catch pure sound.