I have my second of these http://www.ebay.com/itm/121161815800 , having given my first away. It is the one called “Sipik” in the thread 3 different budget headlamps - simple reviews and teardown , because of its simple zoom style. My only problem with it is that the second one had next mode memory, before I swapped the driver. They can be found from various vendors on Ebay. I have used it for close work, but I prefer stationary lights for that.
I also gave away a Raysoon SK-98 clone that came with a head band. I worked well as a headlamp, but had a hollow pill as well as next mode memory.