Memory Stick is a removable flash memory card format that was launched by Sony in 1998. user should know that memory stick used in general to describe the whole family of Memory Sticks. And the original Memory Stick includes family members like Memory Stick PRO, a revision that allows greater maximum storage capacity and faster file transfer speeds; Memory Stick Duo, a small-form-factor version of the Memory Stick, and the even smaller Memory Stick Micro (M2). Consumer will also come across another member called as Memory Stick PRO-HG, which was launched in December 2006 by Sony only. Memory Stick PRO-HG is a high speed variant of the PRO that can be used in high definition still and video cameras. All these functions of memory stick has great importance among consumers in the market. Memory Stick is available with varied ranges and capacities. It also includes a wide range of actual formats along with other three different form factors.