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Customers wearing hats depicting Apple Inc. Apple Watch smartwatches look at Apple Watch smartwatches displayed at the company's Omotesando store in Tokyo, Japan, on Friday, April 10, 2015. Apple's first new gadget under Chief Executive Officer Tim Cook is debuting in eight countries and Hong Kong for previews, with shipments scheduled to start April 24. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images

Customers wearing hats depicting Apple Inc. Apple Watch smartwatches look at Apple Watch smartwatches displayed at the company's Omotesando store in Tokyo, Japan, on Friday, April 10, 2015. Apple's first new gadget under Chief Executive Officer Tim Cook is debuting in eight countries and Hong Kong for previews, with shipments scheduled to start April 24. Photographer: Tomohiro Ohsumi/Bloomberg via Getty Images