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https://en.wikipedia.org/wiki/Headlamp

https://en.wikipedia.org/wiki/Headlamp_(outdoor)

Fenix Flashlight, Headlamp, Fenix Flashlights – BrightGuy, Inc

LED Bicycle Headlight and LED Headlamp | LED Bike Lights …

Streamlight Headlamp Series from SWPS.com

Black Diamond Spot Headlamp – 2016 – REI.com

Flashlight Products: Streamlight, DieHard, ZebraLight