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

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

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

Amazon.com: 9mm flashlight

9mm flashlight | eBay

120-Lumen-Flashlight-w-Mount-Fits-Hi-Point-9mm-Carbine- | eBay