C4 LED technology, impervious to shock with a 50,000 hour lifetime. Up to 17,000 candela and up to 180 lumens measured system output. Deep dish parabolic reflector produces a targeting beam with optimum peripheral illumination. Anti-roll rubber ring and non slip rubber grip. Fits in existing Stinger snap in chargers Constructed of machined aluminum with nonslip rubber grip and unbreakable polycarbonate lens. 3 cell, 3.6 volt sub-C Nickel cadmium battery is rechargeable up to 1000 times. Multi function on/off push-button switch designed for extremely long life. Runtime: High brightness: Up to 2 continuous hours to the 10% output level; Medium brightness: Up to 3.75 continuous hours to the 10% output level; Low brightness: Up to 7.25 continuous hours to the 10% output level; Strobe: Up to 5.50 continuous hours. Includes AC and DC charge cords and charger holders.