This shavers go in straight, intuitive strokes so you don’t need to circle over the same spot twice, helping to minimize skin irritation.the special cutting elements are pressure sensitive and protected by a patented metal mesh for a clean and close shave with outstanding skin comfort. features: 1.ipx7waterproof design, wet and dry shaving ,you can put it in the water to clean 2.3d shaving system , intelligent & quickly shaving 15 hours charging time working time 60 minutes 3.recommends using the shaving cream ,reduce irritation 100-240v voltage ,50/60hz, rechargeable battery design 4.turbocharging function, three speed high power , lithium battery 800-900mah lcd display ,three-speed adjustment package 1 x electric shaver 1 x charging cable 1 x user manual(english) number of gears: 1 gear 2800 times, second gear 3200 times, third gear 3500 times/min power: 5 levels of power display lock screen: 3 seconds smart travel lock charging time: 1 hour fast charging prompt: low battery prompt shaving method: back push trimmer power source: aviation lithium battery battery life: 1 hour full charge and lasting 80 minutes package size:16*9*7cm