Lenovo Flex 3 Review Cnet. Lenovo flex 5 3 review cnet · no content. At ces 2015, lenovo's flex is pivoting to a new design, and this time, the flex hinge folds back a full 360 degrees, allowing you to use the . In our cnet streaming battery test, it ran a little less than 12 hours. That's what the lenovo flex 5 chromebook and ideapad duet chromebook have in . Cnet's coverage of ces 2015: Cnet's joshua goldman reviewed this . The 3 is powered by a .