Maglite 3D LED This powerhouse—brighter than all others tested—has an adjustable beam that the manufacturer says reaches nearly the length of three football fields. (In a pinch, it can also function as a night-stick.) Size: 12 inches.
Eton American Red Cross Road Torq For roadside trouble, shine the bright light on your vehicle while the red flasher (on the back) alerts oncoming traffic. Battery-free—two minutes of cranking gets you 15 minutes of juice. Size: 8 inches.
American Red Cross Clipray Great for camping or hiking, this hand-crank model (no batteries needed) has a USB outlet that can charge your cell phone for short emergency calls. Ninety seconds of cranking gives you 25 minutes of illumination. Size: 6 inches.