[UPDATE]
Lumintop ODF30, designed for outdoor illumination by utilizes a Cree XHP 70.2 LED and runs on one 26650 Li-ion battery. It emits a max* 3500 lumens* on Turbo and a max 250 hours runtime on Eco. Floodlight design, easy use UI, compact body, low power indicator, lock-out function, tail standing capacity, all these are making it the best illumination tool for your caving, photographing, camping hiking etc.
More details: http://www.lumintop.com/odf30.html
It would be nice if it had very small crenelations (>1 millimeter) in that small bezel just to know if it is accidentally left head down on a table. Other than that I like the design.