Looks like 1 watt LEDs so probably not much PAR and poor penetration down into the tank. And they don't tell you what brand of LEDs are used so personally I would avoid it. it looks to me like some of the cheapo chinese made arrays you see on alibaba like this one:
http://www.alibaba.com/product-gs/26..._good_for.html
Might be okay for a shallow tank but I wouldn't use if for SPS or clams etc.