Since companies like Apple release fixed configuration devices such as the iPad and iPhone Seagate saw a need for people with large libraries of multimedia beyond the maximum 64GB on the largest iPad. Since all these modern devices support 802.11n, Seagate thought: wireless + hard drive + battery = success.
The only limit is you can only stream to 3 devices at a time and the Lithium Ion batteries provide a maximum of 5 hours of streaming. To supplement this, Seagate provides a wall to USB power plug and 12 volt car plug to USB power so you can take the Goflex on longer trips.
To transfer files onto the GoFlex Satellite, Seagate provides a USB 3.0 connection that is ultra fast giving me over 170MB/s transfer rates. My 650MB file took mere seconds to copy onto the Satellite.
Seagate has the GoFlex Satellite at an MSRP of $199.99 and due to this being a very new device that is the price we found it at the few retailers that currently carry the GoFlex Satellite mobile wireless device. I am sure once inventories increase we will see it avaliable in more stores.