I dont think you can keep an anemone or many types of coral under that light.
It saids that it's a "3 watt led
". But it doesn't say if it's 3 watts per bulb or 3 watts in total. However based on the price of the product (around $40 on ebay), I'm guessing that it's 3 watts total. Even if you have a shallow tank, you won't be able to keep something that demands a lot of light like an anemone. You might be able to keep mushrooms though.