Driver for low current, high voltage LED

I am looking for a driver to drive a Nichia NC2W170B LED. The LED is rated to at 1.2Amps maximum current and 6.8 Volts. The voltage is higher than even the Cree XHP50 rated at 6V. I will be driving the LED from 2 cells or a 14V battery supply. I looked for drivers online and I thought these might work:

http://www.dx.com/p/18v-5w-cree-circuit-board-for-flashlights-16-8mm-5-5mm-26110#reviews
http://www.dx.com/p/3v-8-4v-5w-cree-5-mode-memory-circuit-board-for-flashlights-16-7mm-6-3mm-26108#.VjHOUmSrQ6h
http://www.kaidomain.com/product/details.S008848

They all provide 1.2Amps constant current. Will they work or does it matter that the particular Nichia LED operates at 6.8Volts instead of the 3.4 Volts of most Cree LEDs?

i think every 2-cell (zener) driver for 6V LEDs should work…

a hard driven xhp needs also around 7V :wink: