Blukar Recharge IPX5 LED Headlamp, Motion Sensor Control, Red mode $17.84 + delivery ($0 Prime, $59 spend) @ Blukar via Amazon

Amazon’s choice product (10k reviews 4.5 stars).

all time low is $16.99 https://au.camelcamelcamel.com/product/B09BJV39FB

can be combined with spend $40 get 5% extra off (usually mostly grocery type items).

this one seems to use COB (chip on board) LED as well. 30 hours runtime claim is probably best case scenario.

 + cheaper than most headlamp's
 + lightweight

 - battery is built in (higher priced headlamps will have replaceable battery)