wearables production and IP protection

Regardless of where you produce your product, you should try to obtain (or at least preserve) your patent rights in all countries where the product might be sold. The reason is that if, for example, you manufacture in China and obtain only a Chinese patent, this would in principle allow you to prevent others from making or selling the product in China, but would not prevent others from making it elsewhere and importing into the U.S. or other countries. The only way to stop sales of a product in a particular country is to have patent rights in that country.