1.[58KHz Ultrasonic Cleaning] Specially Tested efficient 58KHz to the liquid produces small bubbles' blasting, all-around peeling off the stain on the contact lens in short time, causing no damage.2.[Elegant Design] The case is lightweighted and protable, treated with UV light, wear-resistant, smooth and easy to clean; instead of 304 Stainless Steel, 2 independent grooves are made of SUS316 Stainless Steel, which has better durability and anticorrosion.3.[Easy Operation] One button operation, 3-hour charging for 20 days' working, 3min mild temp cleaning per day; 2ml groove saves solution; USB port, suitable for various charging point, or PC, laptop.4.[Friendly Details] Mirror attached to the lid for outdoor convenience, and a pair of tweezers included to prevent hand pollution. A contact lens case is offered in the parcel for lens storage.5.[Why you need a ultrasonic cleaner?] Ultrasonic cleaner provides efficient and harmless contact lens cleaning method for healthier eyecare, besides it is qualified enough for years' working with proper operation, saves you money in the long run, for OK lens, RGP lens are expensive, and much more consumable if they do not maintain good.