... T6*Max output: 900LM *Beam: Focusing*Lens: Anti-shattering ultra clear lens, anti-scratching and anti-slip *Finish: ... turned on, gently press(no click)the tail cap pushbutton switch, the brightness level will switch ... Max,Mid,Min,Strobe,SOS).*Remove the tail cap, insert the batteries with the positive ends toward ... the head of the light, replace the tail cap. Output & Runtime:*Max output of 900 lumens ...