Product Overview CHAOHONG SMART Teaching Machine has 5 optional sizes, 49""/55""/65""/75""/86"".This SMART intergrated Teaching Display is with TV android and Computer Windows 10 system,the double operation system made it convenient to use,and workable for multiple schenerios like class room,training room and home teching.The rich interface create more entertainment possibilities. Product Specifications Series No.: TMCH01S Size: 55"/65"/75"/86" Functions: 1.Set computer, TV, projection screen, play box, projector, writing board in one 2.Empower education, improve quality, and shorten the distance between teaching and learning 3.Free writing, multiplayer interaction 4.Embody knowledge through sound, image and text 5.Screen sharing, real-time synchronization, remote teaching, and simultaneous two-way conversation to achieve efficient and low-cost communication 6.With strong teaching resources 7.Windows 10 system installation Wireless Internet access, enjoy many online education resources, and online learning. FAQ 鈼?nbsp;Q: Is it easy to change the writing contents? A: Yes.This teaching machine supports annotation, drawing, erasing, zooming in and zooming out and rotating images, and supports mobile phone scan code to save teaching content with one click.Teaching Machine manufacturers website:http://www.chaohong-tv.com/commercial-display/teaching-machine/