Coast HP5R Rechargeable Focusing 185 Lumen LED Flashlight Pure Beam Focusing Optic with Slide Focus Flex Charge Dual Power System: Use either alkaline or micro USB rechargeable lithium polymer battery Light output: High - 185 lumens; Low - 19 lumens Runtime: High - 4 hours 30 minutes; Low - 14 hours Beam distance : High - 183 meters (600 ft); Low - 56 meters (183 ft)