waterproof design, can be directly cleaned in water ,do not can use it in the bathroom wet or dry shaving,you can use with shaving cream 100v-240v voltage, Rechargeable battery design 1 adjustable limit combYou can select a length from 0.5mm to 10mm. 2 hours charging time working time 60minutes Automatic grinding technology, blade will be more and more sharp 100% original, new 100%, 100% real picture 3-year quality assurance USB charger design fast , tracking numbers will be tracked during transport Test each product working normal before send out Electric razor can not cut long beard, please use the beard trimmer before shaving The factory engineer recommends wet shaving because all new electric razors have a slight irritation to the skin, but this is not a quality problem, please stick with 2-3 months and your skin will get used to it rechargeable battery design, cordless use, please full charging, if the charging time is too short, cutting is weak Please pull up when you replace accessories (Please do not rotate)