Features: Contact lens cleaner keep your contact lenses clean everyday. Portable size with mini shape, convenient to carry every where. No damage for contact lens during cleaning process by high frequency vibration. Take only 3 minutes to clean, remove proteins and deposits throughly and fastly. 58KHz frequency is specially designed for contact lens cleaning, with nice cleaning effect. No need special care solution, functional water, use normal saline or purified water, distilled water directly, more affordable and convenient. USB port is easy to charged by connecting with powers adapter, power-bank, car chargers, computer, etc.