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The case is made of 6000 series machined aircraft aluminum with non?slip rubberized comfort grip with anti?roll rubber ring Unbreakable polycarbonate with scratch?resistant coating 3-Watt Luxeon LED, impervious to shock with a 20,000 hour lifetime High brightness: Up to 1.75 continuous hours; Medium brightness: Up to 3.50 continuous hours; Low brightness: Up to 6.75 continuous hours; Strobe: Up to 5.50 continuous hours 8.85-Inch length