In situations where being seen is a must, Adventure Lights sets unsurpassed standards. Adventure Lights Safety Lights are ultra lightweight, reliable and bright visual identification products that have multiple applications in a wide variety of environments. The Guardian Tag-It clip-on light from Adventure Lights is an ultra-lightweight safety and signal light that is built into a carabiner. Using a spring-loaded quick-clip carabiner mount, the Tag-It can be quickly clipped to a bike or running vests, rucksacks, D-rings, straps, handles, or a belt loops. Attached to a key ring, zipper pull or a purse provides efficient, bright and portable illumination. At less than 20 grams, this versatile safety light is waterproof to 100 meters, can be seen at up to 3 miles or 5km, and will strobe for over 240 hours on a single battery. Simply flip over the battery to change from flashing to steady-on. The low cost CR-2032 batteries are widely available almost everywhere. The Tag-It clip-on light is perfect for almost everything from reading fine print to finding a keyhole. It can also be use to increase visibility and safety while out in the dark. Extra bright clip-on LED safety light Secure spring-loaded carabiner Highly cost effective Visible from all sides Omni-directional light A simple twist of the lens turns the unit on and off Unique reverse polarity switching Flipping battery changes functions Extra tough optical dome with high impact and shock resistance Maximum visibility range: 3 miles (5km) LED life: 100,000 hours Dual mode: steady-on or flashing Run time: steady-on mode: 100 hours; flash mode: 250 hours Water resistant up to 100m Operates in temperatures from -40°C to +50°C Optional base units and attachments allow easy fastening to clothing or equipment Power supply: two CR-2032 lithium batteries (included) Dimensions: 2.25"x1.2"x1.2" (5.7x3x3cm) Weight: 20g Manufacturer: Adventure Lights Manufacturer's number: 51014