EQ-505R, piezo pickup Power: 9V Alkaline Battery, the battery is not including here. With this preamp, you spend less time tweaking controls and more time playing. Included rod-style piezo transducer pickup, attaches via small jack plug so it can be removed if desired. Can be easily fitted into your acoustic and cigar box guitars ,it is essential to electrify and amplify their sound. Colour: Black Material: ABS Packing size: 15*10*5cm Package Contents: 1 * pickup 1 * Pickup stick 1 pack * mounting accessories Only the above package content, other products are not included. Note: Light 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.