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 plug so it can be removed if . Can be fitted into your acoustic and cigar box guitars ,it is 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia