Unlike traditional contact lens cleaning methods that require up to eight hours of soaking, this device uses ultrasonic waves to remove protein deposits from lenses in two minutes. Simply place hard or soft lenses into the holder, fill the basin with saline solution or purified water, and start the cycle with the touch of one button. The device's piezoelectric transducer emits inaudible high frequency sound waves at 150,000 Hz that loosen protein deposits from lenses without rubbing or overnight soaking and automatically turns off when cleaning is complete. Measuring only 4 1/3" long, the cleaner stores unobtrusively on a sink or in a toiletry bag. Plugs into AC. 4 1/3" L x 2 3/4" H x 2" D. (14 oz.)