How Do I Have a Prototype Built?
There a lot of opportunities overseas for these types of projects, and you can also find "freelancers" who could take on the project. You can go to elance.com and see how that portal can match your request with people who are willing to take on these types of jobs.
Before you do that, however, my question would be: What's your overall plan for your product? How is it competitively different than products that already exist? Is there a market for it? Who'll buy it?
If it is a viable product, how will you sell it?
These are questions you'll need to answer anyway, even if you found someone to produce your prototype, because you'll need to create a business plan -- not only for yourself, but for any potential investors, banks or even venture capitalists.
Better to sort that out before you start spending valuable time and resources (namely, your money) on making something the market already has, or a startup product that will compete against some of the most established and biggest brands in the world -- both of which also have a couple of the planet's largest marketing budgets.
Related: Creating a Product Prototype
Related: How Do I Design a Prototype?
Related: How Do I Produce a Prototype While Protecting My Idea?