Description Features:1.LED Type: CREE XM-L T6 LED2.Max output: 2200LM 3.Beam: Smooth Reflector for focused beam 4.Lens: Anti-shattering ultra clear lens， anti-scratching and anti-slip 5.Finish: HA II Grade 6.Waterproof: IP667.Switch: Tail cap switch 8.Modes: five modes:High-Middle-Low-Strobe-SOS9.Battery: 1PC 18650 Li-ion battery（Battery not included）10.Circuit efficiency: 92% 11.Size: L 135 mm (5.31'') *D 30mm (1.18'')Operation:1.Press tail switch for turning light on/off. 2.With the light turned off， gently press(no click)the forward tail switch，3.Remove the tail cap， insert the batteries with the positive ends toward the head of the light， replace the tail cap.Package Included:1x UltraFire 501B T6 Flashlight Note:Battery not included!!!