Features: Acoustic guitar sound hole pickup for 36-42 inch classic guitars andamp folk guitars. Dual pickup modes(pickup stick andamp Mic), and the volume of Mic can be adjusted. With TONE andamp VOLUME adjusting knobs, supports PHASE function. Easy and quick installation, just hitch the pickup to rim of guitar sound hole, no need to cut holes on your guitar. Exquisite metal andamp plastic shell design, high-quality circuit board with shielded layer, low noise and strong anti-interference. Specifications: Fits for: 36-42 inch acoustic guitar Power Supply: 2 x CR2032 Batteries(Included) Item Size: 8.3 x 6 x 3cm or 3.3 x 2.4 x 1.2in Item Weight: 58g or 2oz Package Size: 13.5 x 12 x 4.5cm or 5.3 x 4.7 x 1.8in Package Weight: 175g or 6.2oz Note: Battery is not included. Package List: 1 x Pickup 1 x Pickup Stick 1 x Endpin Jack 1 x Cable Clip 4 x CR2032 Batteries