Have you ever lost your buddy during a night dive? You may use a single use chemical stick with different colors to identify buddy teams but that is not environmental friendly. Earth friendly Orion Dive Beacon is one of the smallest signal lights in the market and is positively buoyant. Its battery last about 20 hours and can be replaced by user. Orion Dive Beacon is easily identified underwater and you can also find hundreds of applications for it on land too!