High frequency Ultrasonic TechThe contact lens cleaner machine is adopted by ultrasonic wave technology, a frequency higher than 47K Hertz with strong penetration, which can effectively wipe off the impurities from the lens within a short time and thus, thoroughly cleaning the lens without damage.suitable for any contact lens. It's more safe and clear than hand washing.Easy to UseJust put your contact lens in the case with a little contact lenses solution, 4 gear options quick cleaning ,2.3.4.5 minutes optional, automatically stop at that time. You don't have to wash the lens by hand and thereby, liberated your hands .(Wed recommend washing the contact lenses 1-3 times a week.)Portable Compact Case1 contact lens cleaning machine with essentialslens remover, a mirror and 1 contact lens soaking boxes make you more convenient when cleaning and wearing your lenses. A USB cable in the package fits most of chargers, charging 3 hours can be used for nearly 60 days once..Applicable Occasions: With the 4inchs small size and exquisite design from the outside of the automatic contact lens cleaner,it is the most suitable for families, travel, work, business trips and other occasions. You can carry with this contact cleaning kit into your backpack, pocket, handbag and makeup bag. It is also the best gift choice for your friends.