Using the Autoblow 2+ Size A Mouth Sleeve Masturbator is easy. First, plug it into a standard electrical outlet (110v - 240v). Then, apply some water - based lubricant to the sleeve for a smooth experience. Just relax and let the motorized up - and - down motion do the work for you. After use, make sure to clean the sleeve thoroughly. You can use mild soap and warm water. This will keep the sleeve hygienic and ensure its longevity. Also, note that the masturbator is designed to fit girths of 3” – 4” (7.5 – 10 cm) across all lengths. Don't overuse it; the all - metal motor is rated for 500+ hours of use, so use it wisely to get the most out of your toy.