An iSpO2 pulse oximeter is on display at a press event at the Mandalay Bay Convention Center for the 2013 International CES on January 6, 2013 in Las Vegas, Nevada. The USD 249 personal health monitor attaches to the user's mobile device that can record, save and transmit vital statistics. CES, the world's largest annual consumer technology trade show, runs from January 8-11 and is expected to feature 3,100 exhibitors showing off their latest products and services to about 150,000 attendees. Photo: David Becker, Getty Images / 2013 Getty Images