The Streamlight STINGER LED HL C4 flashlight produces a maximum output of 640 lumens and offers three lighting modes: High (640 lumens for 1.25 hours), Medium (340 lumens for 2 hours), and Low (170 lumens for 4 hours), along with a strobe function for signaling. It is powered by a rechargeable 3-cell, 3.6 Volt, Ni-Cd sub-C battery, which can be recharged up to 1,000 times.Key FeaturesC4 LED Technology: Delivers up to 640 lumens measured output.Charging Options: Includes a 10-hour steady charger and a 2.5-hour fast charger, with PiggyBack charger options available.Durable Construction: Machined aircraft aluminum body with a non-slip rubberized comfort grip.Water Resistance: IPX4 rated for water-resistant operation.Impact Resistance: Tested to withstand drops from up to 1 meter.Included Accessories: Anti-roll rubber ring included for stability when placed on surfaces.