video

https://www.flashlighttek.biz/product/princeton-tec-fuel-headlamp-70-lumens/

https://www.coltelleriacollini.com/nitecore-hc70-rechargeable-headlamp-1000-lumens-led-flashlight.html

Description. The Fenix HL 10 puts max output in a featherweight case that opens to release a mini . Three brightness levels deliver a 90 degree beam with a 100 degree tilt inside the durable case.

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

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

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

Fenix Flashlight, Headlamp, Fenix Flashlights – BrightGuy, Inc

Candlepower Compared to Lumens | Lumens vs. Candlepower