Mini appearance, electromagnetic humbucking design, perfect for any acoustic guitar with a sound hole   Easy installation and removable without hurting the finish, no need to hole   Padded clip can guard greatly against damaging to your guitar, support external pickup   Endpin with leather to fix its connection, volume and microphone adjustment   Active acoustic guitar pickup includes 3v button battery, supports 105 hours      This guitar active soundhole pickup is suitable for classic & folk guitars with sound hole of 88-105mm, easy installation.   Dual pickup system-magnetic and microphone, and the volume of pickup and microphone can be adjusted separately.   Magnetic is to collect the sound from the strings while you are playing the guitar.   The microphone is for collecting the sound when you are tapping the guitar.   Features rich, warm ton and wonderful response of the middle and bass, offers the best experience of tapping.      Specifications:   Color: Black   Material: Plastic+Metal   Power Supply: 1 * CR2032 battery(not including)   Item Size: 10.1x2.3 x3.1cm   Item Weight: 150g      Package List:   1 * SKYSONIC T-902 Pickup