The Guardian safety LED beacon is the lightest, brightest, toughest light in its class. The beacon light, unlike its competitors, is visible from all sides (omni-directional) & can be seen for over 5 Km / 3.1 Miles. With its dual function of flashing & steady on modes, the Guardian can offer over 250 hours of use on a single battery pack. Its rugged design allows it to withstand being driven over by an average car. Whether on a camping trip, climbing a mountain, winter backpacking or racing through the woods on a bike, the Guardian is the one light to have when you must be seen. This product is guaranteed to be free of manufacturing defects for a period of one year. Should the product fail for any reason other than abuse or battery expiration, return it for free repair or replacement.