Be very careful about what you want to achieve and why. Developing a product and holding on to the business requires years of commitment and a solid cradle to cradle strategy. Help lines, refunds, quality control and government standards all come in to play. import export requirements, material quality requirements not to mention differing taxation requirements per country and state. Be clear on wanting to license the concept, sell the IP or actually make a business. Not to mention that the profit on hardware is minimal compared to content. (I worked in new business development for Philips electronics for 6.5 years)