This item is old and shows signs of wear, including scratches, stains, and discoloration. The battery can be replaced by pressing the hole near the battery cover with a toothpick or similar object. The power turns on, but the display is not very clear, possibly due to a problem with the LCD screen. Also, the buttons are not very responsive, and there is no sound. The listing includes the main unit only; there is no box or instruction manual. Please note that it may take some time to ship the item.