A good product description makes your product stand out among other close alternatives.
The product description needs to explain the features of the product in a way that it sounds like benefits to the potential customers.
It shouldn't just be about the features of the product but also what differentiates yours from others. The added benefits the customer would get if she buys from you instead of others
I can help you paint that 'benefit picture' on the minds to the readers that they will quickly choose your product
As often as required of you
Job is done or money back