Amazon Kindle is a brand of e-book readers designed and marketed by Amazon.com. Amazon Kindle devices allow users to browse, buy, download and read books, newspapers, e-magazines and other digital media over wireless networks connected to the Kindle Store.  The product hardware was developed by Amazon’s Lab126 branch, which started out as a single device and now develops a range of other devices including the E Ink electronic paper display reader, the machine Android-powered tablet with a color LCD screen and Kindle application that works on all mainframe platforms. All Kindle devices integrate content with the Kindle Store. As of January 2017 in the US, there are more than 5 billion e-book publications on the online store system.