Our hardware product is a head-mounted smart hardware, which can help children avoid bowing or tilting their heads in the process of learning, leading to myopia and other diseases. During the working process, the children are reminded by vibration, and the data are stored locally and analyzed in real time. App connects devices via Bluetooth. According to the proper device name and unique UUID, users can connect devices directly without additional matching process. Through Bluetooth transmission data, real-time reading and displaying childrens learning situation every day, help parents timely supervision. At the same time, there will be many personal activities online for parents to choose.