Microsoft may have missed the first boat on smartphones but it refuses to be left behind in the race to launch wearable devices. The company is testing prototypes for Internet-connected eyewear similar to Google’s Glass, people familiar with the matter told The Wall Street Journal, underscoring the company’s ambitions to go head-to-head with Google, Samsung and Apple on devices. Last month, Microsoft struck a $7 billion deal to acquire Nokia’s cellphone business in a bid to catch up in a market dominated by Samsung and Apple. Microsoft also has launched the Surface tablet computer and continues to test its own touch-enabled watch, people familiar with the matter have said. Research firm Gartner expects the market for wearable smart electronics to be a $10 billion industry by 2016. Last month, Samsung unveiled the Galaxy Gear, a digital watch that can run apps and interact with its own family of smartphones.