1 -With Wet and Dry, you might opt for a comfortable dry shave or a refreshing moist shave. 2 -5 Levels Precision Adjustment , Single-wheel rotary adjuster, clear to adjust the gap of the cutter head. By rotating the wheel within the middle of the hair trinmer, you may choose 5 gears of distance from O to2 -Long battery lifestyles , Charge your Trimmer totally in just 2 hour with the powerful and energy efficient lithium-ion battery , be using a hundred and twenty mintues There became no motor oil in the equipment thanks to air visitors control, which prohibits the delivery of liquids