Features: It effectively removes sediment and bacteria from the eyeglass by ultrasonic vibration, leaving you comfortable, safe, healthy, cleaning wearing experience. It can not only clean eyeglass, but also contact lenses, gold, jewelry, false tooth, etc. The cleaner is equipped with a screwdriver, you can use it if the screw on the eyeglass is loose . The cleaner requires two AAA batteries only, get rid of the charging. (batteries are not included.) Specification: Material: Plastic Optional Color: Blue Battery: 2 * AAA Battery (Not Included) Machine Size: Approx. 16.5 * 6 * 6.5cm / 6.5 * 2.4 * 2.6inch Weight: 170g Type: Jewelry Cleaners & Polish Package List: 1 x Cleaning Machine 1 x Screwdriver 1 x Lenses Box