Check the listing for details. Tactical 400 Lumen Weapon Mounted Light Multifunction White LED WML Flashlight##. Condition: New. Listed at 28.99 USD. Features: (1)Light Output: 400 lumens Run Time: 1.5 Hour Multi-Function Button Constant and Momentary High Output of 400 lumens only. Strobe and Strobe Disable. Integrated Mounting System: Compact, Convenient and Secure. NAR/MIL-STD-1913 rail compatible. Pivoting clamp fastens the light to the rail. No tools needed. Angled Activation Switch: Comfortable and easy to operate without interference of wires from tape switches. (2) Lockout Systems: Safety Lever, Head Rotation Bezel Diameter: 1.125 in. / 2.857 cm. Length: 104mm Weight : 4 oz. / 113.4 g Battery: CR123A Battery(No Included) High Efficiency Emitters: provide longer run times and are virtually immune to failure. Coated Mineral Glass Package includes: 1×Tactical 400 Lumen Multifunction White LED Flashlight Instructions: Lever on left hand side of light controls button only active when in back position and controls light on / strobe when in forward position. When lever is in back position simply push and hold to keep light on, release for light off. When lever is in forward position, single click for light on / single click for light off, rapid click twice for strobe on / rapid click twice for strobe off.Features: (1)Light Output: 400 lumens Run Time: 1.5 Hour Multi-Function Button Constant and Momentary High Output of 400 lumens only. Strobe and Strobe Disable. Integrated Mounting System: Compact, Convenient and Secure. NAR/MIL-STD-1913 rail compatible. Pivoting clamp fastens the light to the rail. No tools needed. Angled Activation Switch: Comfortable and easy to operate without interference of wires from tape switches. (2) Lockout Systems: Safety Lever, Head Rotation Bezel Diameter: 1.125 in. / 2.857 cm. Length: 104mm Weight : 4 oz. / 113.4 g Battery: CR123A Battery(No Included) High Efficiency Emitters: provide longer run times and are virtually immune to failure. Coated Mineral Glass Package includes: 1×Tactical 400 Lumen Multifunction White LED Flashlight Instructions: Lever on left hand side of light controls button only active when in back position and controls light on / strobe when in forward position. When lever is in back position simply push and hold to keep light on, release for light off. When lever is in forward position, single click for light on / single click for light off, rapid click twice for strobe on / rapid click twice for strobe off.