Compared with many tablet products, there are ordinary tablets and learning tablets, but in the end I chose BBK S5, mainly because of its chip eye protection and synchronization function, which can filter blue light and will not cause harm to eyes. The actual experience is that children say that their eyes are not dry, and the machine will send out a distance reminder when sitting close to the screen, which feels helpful to maintain a correct sitting posture. There are synchronous teaching materials and teaching AIDS from primary school to high school in the tutor, which can be used by universities. Now I have downloaded WeChat and Nail for my children, as well as ape counseling, homework help and Xueersi online school, and studied after class. Generally speaking, BBK tutor S5 can meet all the needs of online courses and even help with homework. I'm glad I chose the right product.