Features: Telescopic focus adjusts beam from wide (flood) to pinpoint beam Machined aluminum slider head and barrel Bezel Mode Selection: High 500 lumens; Medium 150 Lumens; Low 80 lumens; Strobe feature for emergencies Rubber encapsulated On/Off push button switch Cree LED Technology - 50,000 hours average LED life Operates on one Lithium Ion battery included; also included extra Lithium battery for back up if needed USB charging cable included 2 port 12v Automobile USB and Wall charging adaptor included EMERGENCY CHARGE CELL PHONE with your flashlight using standard USB port on back end of flashlight Water resistant o-ring seal construction 10 year limited warranty