Damnit, your basement flooded and its pitch-black down there because the lights arent working. Hang on, whats that floating light down there? Is that the Coleman 2D WaterBeam Auto-On Flashlight? Probably. This light automatically turns on when its dropped in the water, which means youll be able to see, whether its a basement flooding situation or whether youre out on the water at night. The WaterBeam floats, runs for about 15 hours, and uses a durable housing and shock-absorbing rubber head to dismiss drops at the campsite.