Headlamps are useful without question but I find (and it might be just me) that the elasticated bands become uncomfortable during prolonged use which in all fairness could be relative to our climate, personally I prefer magnetic COB style worklights.
I have used many more expensive lights working on Aircraft in all sorts of conditions from Alaska to Africa. This is honestly better than all the name brands out there. Inexpensive, very bright, lasts a long time, rechargeable, and will use 18650 batteries. I use the Streamlight SL-B26 in several lights, it keeps things simple. The headband is comfortable, easily adjustable, and doesn't deteriorate with sweat. If you destroy or lose it working no big deal.
Find many great new & used options and get the best deals for BORUiT LED Headlamp 7-Mode Powerful Headlight USB Rechargeable for Camping Fish at the best online prices at eBay! Free shipping for many products!