According to the led light-emitting principle the use of high grade aluminium radiating lamp cup, good heat dissipation effect of the led lamp, LED luminescence efficiency can reach the best state. And the spotlight effect is food, can according to the farther, the range of more than 1000 meter. instruction :-(1) switch operation :-press the key to open the first lighting under weak light , the second light, closed press third . cycle in turn. (2) charging operation :- please connect the AC wire to the lamp , then put the plug in the AC100V-240V/50-60Hz socket ,indicator light turns red indicating that it's being charged, it takes about 13 hours to have full power , when indicator light turns green, please stop charging . during using , when LED start to dim, it means the battery is in power shortage . in order to protect the battery, please stop using and recharge it immediately ( please do not let the lamp to fully discharge ) the product should be charged and used frequently . otherwise keep charging it for 13 Hr every three months or the battery life will shorten.