The Ultrathin and Ultralight ThinkPad X250 comes with improved features, connectivity, durability and specifications. The laptop packs a full-sized and spill-resistant keyboard, which gives excellent feel while typing, optimized for Windows 8 and later versions with LED status indicators, convenient multimedia buttons, and function-lock capability. There is an optional backlit keyboard as well which assist you in low light environment. The laptop features Full-HD resolutions with IPS and multi touch technology, which offers vivid colors and brightness with 180-degree viewing angles. The touch panel responses immediately and makes the overall working experience unique and wonderful. The sturdy laptop works well under diverse conditions such as humidity, vibration, high temperature, high pressure, temperature shock, and low pressure. The system packs an internal battery with an external hot-swappable battery so you can swap batteries without powering down your laptop, you can use your laptop for up to 20 hours wherever you want.