Not every animal drop in its track. Have the right tool for the job. Make every drop count. Because at the end of every blood trail we want you to rest in peace. State of the art Blood Tracking Technology driven by the combination of a proprietary filter and ultra-bright LEDs - Makes Blood visible in ALL types of terrain - Rugged machined aluminum body - 2 Modes: Blood Tracking and low illumination white light for hiking - Compact design fits in nearly any pocket (included pocket clip) - Includes 2-AA batteries