Connect all your iOS devices to read PDF files cooler! 1. Fast point-to-point connection via WiFi(use Apple's multiPeerConnectivity framework and technology). Local area network is not required. Up to eight devices can be connected at the same time. 2. Easy to use, excellent reading experience, broaden the scope of reading and pages. 3. Instantaneous transmission and linkage, no sense of delay. 4. Automatic page flip, variety of page flip options. 5. Devices can be arranged horizontally or vertically. Corresponding to horizontal and vertical page flip. 6. Support iOS11 Files management.Mac/PC transport PDF file to iOS device via WiFi.