This is an incredibly bright head light...much brighter than others I have purchased which have just a few LEDs on them. From my photos it looks like this has at least a dozen spread across its surface
The headband is so bright that I felt it hurt my eyes when looking directly at it. If others feel this way than it might be an awkward accessory to wear in a group ... its like driving with your high beams on
The layout of the LEDS gives this light a wide area of even illumination. This is unlike a single super bright LED that has a fast drop off. The same effect could likely be achieved with a good reflector and lens, but this multi-led approach is likely cheaper while yielding more overall light. Seems like a win win
As with all recent lights, this comes with its own rechargeable battery via USB, making it easy to maintain. I am not sure if the battery inside can be replaced. Sometimes you find a common lithium cell inside things like this, so perhaps open it up prior to discarding it if you find the battery does not hold a charge in a few years.
Overall a surprisingly bright headlamp. Great to situations where you need a lot of light and both hands are full