The HammerHead Tac-Strobe LED Flashlight is used by field crime scene search, lab and medicolegal (including SANE, coroners and medical examiners) personnel to search the scene for evidence. This handheld LED light enables the investigator to visualize forensic evidence up to 10 ft (3 m) away. It is powered by 2 lithium CR123 batteries or 1 rechargeable 18650 battery.