... magnetic force:more than 0.4T9.housing size :145*36mm10.lamp cap diameter:59mm11.weight :500gProduct Characteristic1.shockproof ,shock resistant2 ... than 5 years5.our battery have overcharge,overdischarge protection6.Lamp cap can revolve 0-90 angle7.hight magnetic forceAmy ... 555,Panyu north avenue,Panyu district, Guangzhou,Guangdong,China led super bright torch light,led flashlight ,railway flashlight