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Among the list of updated machines is the Lenovo 310 Touch, a revamped version of the U310. The device has a 13.3-inch display, measures in at just 18mm thick and has, Lenovo claims, a wake-up time of less than one second.
The U410 (pictured) is similarly svelte at 21mm thick and has a slightly larger 14-inch screen. Despite the difference in screen size, both offer a maximum resolution of 1,366 x 768 pixels.
The U310 and U410 were first released during 2012 but both are now available in a Touch model that supports 10-finger operation and gesture controls.
Under the bonnet, the U310 Touch and U410 Touch's hardware can be specified by the buyer, but can include third-generation Intel Core i7 processors, up to 1TB hard disk drive, integrated graphics and up to 8GB of RAM. Lenovo said the U310 has around six hours of battery life whereas the U410 can eke out eight hours.
UK pricing was not available at the time of writing but in the US, the U310 should start from around $780 (£465) when it goes on sale in March 2013, while the U410 will be available from around $850 (£528) in April.