This is how I would describe my job to a friend:
As a Product Manager, you are the link between the market (i.e. customers, competition, sales, service) and the more internally-oriented departments (R&D, production and purchasing) in all matters concerning a particular product group. My main responsibilities include market research (customer requirements, offers by the competition, trends, technologies), designing the product life cycle (developing new products, further developments, product care, discontinuation) as well as supporting marketing and sales with product-specific matters (USPs, communication, target groups, applications…). As a product manager, you act for “your” products like an entrepreneur in a company, and you shape the path to success holistically.