Acoustic guitar sound hole pickup for 36-42 inch classic guitars & folk guitars. Dual pickup modes(pickup stick & Mic), and the volume of Mic can be adjusted. With TONE & 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 & plastic shell design, high-quality circuit board with shielded layer, low noise and strong anti-interference. Fits for:36-42 inch acoustic guitar Power Supply:2xCR2032 Batteries(NOT Included) Item Size:8.3x 6x3cm/3.3x2.4x1.2in Item Weight:58g/2oz Note:Battery is not included. Due to different product batches, the appearance , which does not affect the use. Colour:As Shown Material:Copper + Wood Package Contents: 1 * Pickup 1 * Pickup Stick 1 * Endpin Jack 1 * Cable Clip 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.