The StarFlash is an essential component to your survival kit. The advanced StarFlash system allows you to aim the signal flash with pinpoint accuracy. The advanced Lexan polycarbonate is shatterproof, scratchproof and it floats. This star-shaped targeting system removes the guesswork and chance associated with other inferior signal devices to ensure that you will be seen and be found. Dimensions are 2in x 3in. Weighs .7oz.