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While the idea of a dual-screen laptop seems like a far-out concept, with the Yoga Book 9i, Lenovo is proving there’s a lot of merit to its design. By including a bunch of bundled accessories including a stylus, a magnetic keyboard and a folding kickstand cover, the laptop can transform from a standard clamshell to a portable all-in-one in seconds. Its daul 13.3-inch OLED displays are punchy and bright and, despite having two panels instead one, battery life is pretty solid. The big issue is Windows because, while Lenovo’s hardware is solid, Microsoft’s OS isn’t quite ready for the dual-screen laptop revolution.