Mini portable Ultrasonic Contact Lens Cleaner Features: This ultrasonic contact lens cleaner adopt advanced ultrasonic tech to clean your contact lens, unlike manual cleaning, it saves your time in the morning. and it can used to clean various contact lens, soft or hard material, like RGP contact lens, HCL contact lens, SCL contact lens, orthokeratology contact lens And ultrasonic tech which is an completely physical way, it provides a completely cleaning to your lens. Mini sized about 3.62'' *2.44''*1.57'', simply put it to your pocket and carry on the go. Two working time selection: Fast Cleaning Time: 3 minutes, Strong Cleaning Time: 5 minutes (Once a week). Also works with portable Micro USB cable, convenient for use. Maintenance: 1. Please empty the water in the clean tank when you finished and then use a dry clean cloth to wipe the water inside the tank, and keep it in airy and dry places. Note: 1.For the first cleaning, we will recommend you to set the time to 5 min for deep clean. and please DONT cleaning your contact lens several times constantly with this devices. and It is common that ithe stainless steel was a little hot for constant working but it will not damage your contact lens. 2.Please DONT use other chemical water to clean your contact lens, we will recommend you to use functional water, physiological saline, purified water to clean 3. So for a long time use and better using experience, please use the item under guidance and dry the cleaning. 4. There's a little buzz, which means it's working. Contact Lenses are delicate products, cleaning can not be directly seen with the naked eye, after the wearing of cleaning can see the effect, long-term use, the eye will be better. 5.Any questions, please feel free to contact us, we will try our best to help you.