... It's a intellegent model. MODEL:HC-302A/B1) Intelligent rechargeable hair clipper, shear force and cutting speed will adjust automatically ... : 100V-240V,50Hz/60Hz; Output: 4.5V 1200mA.3) Rechargeable battery: 3.6V 3*AAA Ni-mh 700mA4) Charging time ... 6mm/9mm/12mm, lubrication oil, scissor, comb, cleaning brush.6) Charging indicator: 5pcs LED7) Shear force: 2LB-4LB. Intelligent Rechargeable Hair Clipper