Light Output: 400 lumens, Battery: CR123A Battery(No Included)
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.

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.