I have the Optical Dynamics CALS. It is a very bright white light that doesn't do anything more than a green or red light does when it comes to predator hunting.
Bright white lights tend to irritate animals after a while and they stop looking. It advertises that it is a natural light so it doesn't bother animals. It's LED and there is no LED that is natural light.
It is high quality and a great flashlight for any purpose, unlike red or green. It does not use rechargeable batteries and DO NOT use the rechargeable CR123As in flashlights, wrong voltage.
I have not been able to identify a coyote (through a scope) or identified shot placement any better (or further away) with this light over a red or green at a fraction of the cost.
I haven't given up on it, yet.