by the end of 2009, epson began the development of an eyewear display that would deliver a big-screen experience to people on the go. thus, it was intended to be small, lightweight and comfortable to be convenient for travelers and optical see-through so that viewers could see their surroundings while watching multimedia content. on 9 november 2011, it announced in japan the moverio bt-100, a 3d-enabled optical see-through eyewear display which features 0.52-inch displays with 960×540 resolution that give the impression of viewing a 3d virtual 80-inch display from a distance 5 m. it is powered by android 2.2 and packs wi-fi ieee 802.11b/g/n (direct access to youtube and a web browser) and microusb. the moverio was shipped to japanese stores on 25 november and was expected to initially sell 10,000 units. in march 2012 epson launched the moverio in the united states.