<b>ISV-Certification.</b><br>Because photographers, light CAD/CAM users, digital content creators, and other industry pros require proven performance and software stability, numerous applications are tested and certified by industry-leading independent software vendors (ISV).<br><br><b>Military-Specification Testing</b><br>Validates the ruggedness, durability, and quality of ThinkPad products by testing against eight parameters: high pressure, humidity, vibration, high temperature, temperature shock, low pressure (15,000 ft), low temperature, and dust.<br><br><b>Epic Battery Life With Power Bridge Technology</b><br>Stay unplugged for up to 13 hours. Plus, when you need more time, Power Bridge technology lets you hot-swap the removable rear 6-cell battery with an extra travel battery, without powering down. The internal 3-cell battery keeps you up and running.<br><br><b>Award Winning Backlit Keyboard</b><br>Full-sized and spill-resistant, the legendary ThinkPad ergonomic keyboard is ren