The Pickup can be used for 39-42 inch Acoustic Guitar.
Magnetic Soundhole Pickup with Built In Effects
Add a new dimension to your acoustic guitar through this amazing soundhole magnetic pickup. Enjoy textures of reverb, chorus, and delay, whether amplified or unplugged - this revolutionary pickup will bring a fresh inspiration to your playing.
Quality and durable,easy-install,Avoid opening. No battery including,Great pickup-effects. Useful and portable.