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2 pack and combo.

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

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

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

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

How Many Lumens Do I Really Need? – LED Flashlights

headlamp flashlight lumens | eBay

Amazon.com: flashlights lumens

Amazon.com: lumens headlamp

Flashlights: How to Choose the Best Flashlight – REI …