Nexus S is the first smartphone to feature a 4 Contour Display designed to fit comfortably in the palm of your hand and along the side of your face. It also features a 1GHz Hummingbird processor, front and rear facing cameras and 16GB of internal memory. After December 16, Nexus S can be purchased (unlocked or with a T-Mobile service plan) online and in-store from all Best Buy and Best Buy Mobile stores in the U.S. and after December 20 at Carphone Warehouse.”]
Source: https://googleblog.blogspot.com/2010/12/introducing-nexus-s-with-gingerbread.html