Thank you for viewing. This is an external battery case (battery case) for a Panasonic portable CD player. 【Compatible Models】 ・SL-SX510 ・SL-CT570 ・Please check the images for other compatible models. 【Condition】 ・No blue mold is visible. ・The exterior has no noticeable scratches and is generally in good condition. ・Battery tested and working. ※Please forgive any minor scratches as this is a used item. ※Everything in the images is included. If you are looking for a working battery case, please consider this.