PALO ALTO, CA - APRIL 10: A customer with a dog looks at Apple Watches inside a display case at an Apple Store on April 10, 2015 in Palo Alto, California. The pre-orders of the highly-anticipated wearable from the tech giant begin today as the watches arrive at stores for customers to preview. (Photo by Stephen Lam/Getty Images)

PALO ALTO, CA - APRIL 10: A customer with a dog looks at Apple Watches inside a display case at an Apple Store on April 10, 2015 in Palo Alto, California. The pre-orders of the highly-anticipated wearable from the tech giant begin today as the watches arrive at stores for customers to preview. (Photo by Stephen Lam/Getty Images)