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This article first appeared on GuruFocus. Amazon (NASDAQ:AMZN) shares rose about 1.5% in Tuesday trading after its Ring unit unveiled an indoor security drone and a business patrol robot, expanding the company's push into the smart home and commercial security market. The Ring Drone Cam, priced at $250, can fly between rooms and investigate when alarms trigger. It offers about eight minutes of flight time before returning to a charging dock. Ring CEO Jamie Siminoff said the device may act as a crime deterrent. Warning! GuruFocus has detected 6 Warning Signs with AMZN. Is AMZN fairly valued? Test your thesis with our free DCF calculator.
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