Niterider Lumina 750.
On “Low”, which is 200 lumens – 5hr 30 minutes.
It’s been having very demanding live with me for the last 16 months. Used everyday in every weather. Had few crashes with it, it has been dropped on concrete, it was submerged in a bowl for 10 minutes… I rode Bontrager 24/12 with it.
Great light. Solid mount (don’t overtight it! not much force needed to keep it in place), helmet mount in a box, USB rechargeable.
I got Lumina 400 on a helmet last year and this is a perfect couple.