video

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

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

Amazon.com: key flashlights

key flashlight | eBay