Traditional cleaning contact lens can't clean thoughlySoaking in care solution, the effect is not obvious limited protein removal.Rub the lens by hand easy to couse scondary damage, easy to damage the lens.The best choice for lens Adopted by high frequency ultrasonic tech, effectively wipes off the impurities within a short time and clean the lens without damage. 3 or 5 minutes quick cleaning, safer and less time consuming than hand washing. Portable and Recharged Design, It is very easy to carry, no matter you are anxious to go to work, travel, or to date. It is even can be a lens case for putting in. Charging 3 hours can be used for nearly 30 days once. Specifications: Tech: high frequency ultrasonic tech Product size: 3.9×3.5×1.4 inch Product weight: 0.24lb Package size: 5.9×5.1×1.5 inch Package weight: 0.3lb Rated voltage: 5V Rated power: 2W Charging method: USB charging How to Use: Take out the contact lens case. Inject care solution into the cleaning case. Put the lens case into the contact lens cleaning machine and fasten it with the lock. Click the switch button to start cleaning.Click once to clean 3 minutes.Click twice to wash for 5 minutes.Stops automatically after cleaning.