Features: 1 .Super bright & latest CREE XML-2 LED High-Performance High-Efficiency and energy conservation. 2 .Bead surface lens wide and uniform flood beam shot. 3 .Flat tail cap with strong magnet to secure to ferrous surfaces. 4 .Rugged indestructible aluminum body with anti-scratching type III hard anodized 5 .Multi-level dissipating heat design excellent heat dissipation. Flashlight head integrated construction high thermal conductivity. 6 .Side switch button to transferring mode user-friendly interface to adjust output. 7 .Four output levels and Strobe suitable for different environment. 8 .Wide input range provides more choices of batteries. High efficiency driver circuit no visible flash in any mode. 9 .Automatic memory function remember last used setting and can be preset to specific output mode for instant access. 10 .Reverse polarity protection to protect from improper battery installation. 11.Low-voltage prompts function the light will flash when the battery is low remind user replace the battery on time. 12 .Engineered anti-slip knurling for a tightly firm grip. 13 .Dual recoil absorbing springs better impact resistance. 14 .Tail stand as a candle-light. 15 .Tail hang hole design for lanyard use to prevent accidental dropping. Operation: 1. Battery installation & Replace magnet: Insert the battery into the flashlightthe battery positive pole toward the light head. Ensure batteries are inserted correctlythe flashlight will not operate with incorrectly inserted batteries. Ensure when the light turning onthe beam is directed away from the eyes. 2. Flashlight turning on/off: When the flashlight was OFF status: Press the side switch to memorized brightness level. Press and hold the side switch 0.5 secondto low mode. Quickly double press side switch to turbo mode. When the flashlight was ON(any mode) status: Press and hold the side switch 0.5 second to turn off. 3. Brightness & mode selection: Brightness level: Press side switch to Low-Mid-High-Turbo cycle. Special modes: Quickly double press the side switch to Strobe (10Hz)Press side switch back to previous brightness level. 4. Low voltage indication When the battery voltage drop downthe light will blink three times every 2 minutes.