This is a mini-sized training device that automatically performs exercises by attaching it to areas of concern such as your arms and thighs using EMS (Electrical Muscle Stimulation). The outer box shows signs of age, but the item is unused. Fit Care Exercise Series EMS Muscle Pack Mini MG MEM2-CBBK Contents Main unit, storage board, 2 button batteries, instruction manual Size: Approximately 20 x 5.5 cm ●The outer box has some signs of age, but the overall condition is good. ●It appears to be unopened, but I have taken it out of the box for confirmation and to show you the product. All parts are present, and the adhesive sheets are included. There are no visible issues. ●Therefore, the operation has not been confirmed. I am not in a hurry, so when you purchase, I recommend confirming the operation before leaving a review. ●About shipping ●I am also selling another item. I can combine shipping. I will ship it in a waterproof package. The shipping method may change. (RakuRaku Mercari便 ↔ YuYu Mercari便) Please forgive me for reusing packaging materials such as boxes and envelopes for hygiene, functionality, and privacy reasons. If this is inconvenient or you have any preferences, please do not hesitate to let me know. Thank you for looking.