Streamlight Polystinger DS C4 LED Rechargeable Flashlight features dual switches that operate independently from one another. Gives you access to all four light modes with either switch. C4 LED technology focuses light on objects hundreds of feet away! Photonic Crystal and Thin Film Flip Chip, among other technologies combine to make LEDs even better! Such enhanced efficiency as well as innovative use of reflectors to magnify, direct and intensify light beams, makes Streamlight C4 LED flashlights two to three times brighter than traditional LED flashlights.