<b>Weighs Less Than 4lbs; Less Than 1" Thick</b><br>Whether you're on the road, at the café, or on the way to class, at just 1.8kg (3.9 lbs) and 22mm (0.9") thick, the S310 won't weigh you down.<br><br><b>Up to 5 Hours Battery Life</b><br>Stop worrying about your battery: With the IdeaPad US310, you can enjoy up to 5 hours of productive use between charges. Lenovo Energy Management protects the long-term durability of the battery and uses advanced energy-saving technology to increase time spent between charges.<br><br><b>Colorful Design</b><br>The S310 boasts a tactile exterior and comes in a range of colors – it looks as good as it performs.<br><br><b>Optional Discrete Graphics</b><br>For optimal graphics performance, choose an S310 with discrete graphics from AMD. AMD Radeon™ graphics deliver dazzling visuals for gaming and multimedia.<br><br><b>Stereo Speakers With Dolby® Advanced Audio™ v2</b><br>The S310's speakers provide rich stereo sound, while Dolby® Advanced Audio™ v2 enhance