Fenix HP15 Expedition 500 Lumens Headlamp Water Resistant LED Flashlight with LegionArms AA Batteries (Grey-Black) 500-Lumen maximum output with 172-meter throw, Five brightness levels plus SOS mode IPX-6 Water Resistant rating which protects against heavy spash and rain Detachable diffuser lens to allow quick switch from flood beam to spot beam in a single movement Lockout function - prevents the light from accidental activation Come with 4 AA LegionArms Battery pack