Product Description: USB with charging function: The battery can be used 60 times when fully charged, which is convenient for short trips. Thanks to USB charging, you can charge it anytime when ma no power available. Ultrasonic technology do contact lens cleaning: This contact lens purifier uses high-frequency ultrasonic waves that are less audible. It effectively removes protein deposits from tears and does not require overnight soaking, thoroughly cleaning every corner. Quiet operation: This mini contact lens scrubber features a low noise level, ensuring a peaceful working environment without disturbing others. User-friendly design: The do contact lens immersion cassette consists of two separate recesses to prevent further cross-contamination. The purifier is equipped with lustro and do tools for inserting and removing contact lenses, as well as tweezers for easy cleaning and insertion of lenses. Easy to use and with charging function: 3 or 5 minutes of quick cleaning za one start button, and after each cleaning automatic shutdown. The lens cleaner is charged za using a USB cable that fits do most chargers. After 3 hours of charging, it can be used for almost 30 days