A good, handy flashlight is a must to have in your car. The csi flashlight has 8 super-bright leds for it s main illumination and providesa a clean, white light. It also features 3 green light leds for maintaining your night vision when reading maps and such. For emergency situation, the csi flashlight can flash on and off to warn other drivers as well as flash sos in morse code to signal for help. The body of the flashlight is anodized aluminum for light weight and features a hexagonal endpiece to resist rolling when set down and is water-resistant. Included is 3 aaa batteries. This one flashlight can be a lifesaver in those inopportune times on the road.