HYN-226Professional Engraving Hair Trimmer Product speed: 6500RPM Product voltage: 110V-240V (worldwide) Power: 5W Battery : 2000 Lithium-ion battery Charging time: three hours Duration of use: 240 MINS Blade adjustment: zero Accessories: 1*cleaning brush, 1*USB charging cable 1*blade cover, 4*GUIDE COMBSProduct features1,6500RPM high speed, no jamming 2,The knife head isn't sizzling for a long time, and the warmth dissipation is large, which effectively improves the excessive temperature of the blade 3,All-steel blades, great hardness, long-lasting sharpness 4,strong energy motor, not scared of hard and hard hair 5,Large capability lithium battery, complete fee can be used for more than 3hours