L19 is specially designed for long-range lighting. The excellent optical design lens enables the flashlight to have high output power and strong light-gathering ability. It can find prey or targets within a distance of 1300 meters (4265feet) white, providing sufficient response time for you to deal with emergencies. Specially designed for tactical and hunting employment, this high power long range hunting flashlight is with features as easy-access tail-switches, crenelated strike bezels, and weapon-mounting capabilities. The Acebeam 21700 battery with USB-C rechargeable port is an great option for L19 to save you one more charger’s cost. Delivered reliable, powerful lighting for a long range of situations, it is perfect for tactical use, hunting use, outdoor use, professional use, security, & law enforcement.