Personal trainer Robert "Bob" Harper, left, tries on the Apple Watch during the Apple Inc. Spring Forward event in San Francisco, California, U.S., on Monday, March 9, 2015. Apple Inc. began showing off features and applications for its first new device in five years, a smartwatch designed to put information on peoples' wrists and break open the fledgling market for wearable technology. Photographer: David Paul Morris/Bloomberg via Getty Images
