Cheap headlamp for rare use, around 20usd, 18650 or 21700

[Agro]

I would say that for occasional use a D10 would be perfect.
Though it would need a LED swap.

@madsnake

Smaller the battery, more comfort when wearing tbh. If you do not need long runtimes and can carry a spare battery, get something with 18350. Eagle Eye X1R is the most unpretentious light in that segment in my opinion. If you can grab it with a coupon (if you are not in a hurry) it can drop to 12$. But in any case i would not recommend a 21700 headlamp, it will be too heavy.

Note that it doesn’t include a headband.

And X1R is a hefty light, even with 18350 it’s not very lightweight…