Lenovo’s ThinkPad X220 laptop is one of the early ultraportable laptops running on new processors based on Intel’s Sandy Bridge microarchitecture. The X220 comes with a 12.5-inch display and will be powered by Intel’s Core i3, i5 or i7 processors. The laptop can provide up to 15 hours of battery life with a nine-cell battery. Lenovo also announced a convertible variant of the X220 — X220 Tablet — which will include a swivel touchscreen.”]
Source: https://www.csoonline.com/article/2127555/lenovo-announces-thinkpad-x220-ultraportable.html