1. Large format touchscreen display; 2. Applicate for classrooms, support normal writing with ordinary chalk, dust-free chalk and various ink pens; 3. Function of ordinary blackboard, high-definition display and interactive touch control in the middle display; 4. Feature: 10-points touch in the middle P-CAP, built in document camera, 4K UHD image-eyes protect, zero air gap design, dust Free, NFC funtion.