Google Glass is the first wearable computer for retail. It’s using head-mounted display feature for screen. Most important feature of Google Glass is to understand and run the commands by voice of owner. First glasses Google produced are not offering lenses but Google is making cooperation with Warby Parker and Ray-Ban for it. Also company is planning to open retail stores for demonstration and sell. First product Google produced in this category is “The Explorer Edition” It’s fixed to glasses but Google announced that new model will be able to attach to any glasses. How many features of Google Glass are there?