Amazon adds 10M Prime subscribers during holiday

Amazon says more than 10 million people tried the online retailing giant's Prime subscription service for the first time this holiday.

In a statement released Friday, Amazon says more than 60% of customers bought items using their mobile devices. Also, total holiday sales in the U.S. made from the Amazon app doubled this year.

Amazon Prime is a subscriptions service available for $99 a year. It offers free two-day shipping on most items sold through Amazon, as well as access to its streaming video and music services. Kindle owners also get access to a lenders library where they can borrow books for free.

Shares of Amazon are up more than 1% in morning trading.

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