Make your glasses like new in just a few minutes with our Ultrasonic Glasses Cleaner. The device uses ordinary tap water and vibrating ultrasonic sound waves to loosen and remove dirt, makeup, grime and oil, without heat or harsh chemicals. Just add water, place your glasses in the cleaning basket and turn it on. 5 minutes gives a basic clean. 15 minutes gives a thorough clean. Safe for all blue light glasses, prescription glasses, readers and sunglasses. Charges via USB port.