ONYX BOOX C67ML 4G Wi-Fi Android 4.22 E-ink Touch Screen Ebook Reader Upgraded Version With Enhancement of WIFI module, open browser, fast connecting speed, you can download books, read online and surf on internet freely and more faster. Newly developed Android OS can allow you install all kinds of reading APPS to extend your reading world. You can record your opinions of reading the books with others via wireless connectivity. Fast pageturn, but no screen flash and less ghosting, perfect for speed reading of text documents. New A2 refresh mode increases the refresh rate by 200%.