SureFire Maximus Rechargeable Variable-Output LED Headlamp 500 Lumens HS3-A-BK w/ Alliance Gadget Keychain Light Virtually indestructible LED emitter regulated to maximize output and runtime One-hand output adjustment from 1 to 1,000 lumens Precision reflector produces a wide, smooth beam optimized for your field of vision Tough, lightweight magnesium body with durable black finish, IPX4 Water Resistant Includes: Lumintrail Keychain Light