There's nothing inherently wrong with the product, but the description "extremely" bright is grossly misleading. I bought one but had to return it. Per the manufacturer this produces 25 lumens (Lm). For reference, a 12V 25W incandescent is 375 Lm and a 12V 12" fluorescent is ~400 Lm.
If the description were accurate, I'd give this 5 stars, but anyone wanting "extremely" bright will be disappointed.