LED Nano touch smart blackboard   Apple Nano Touch Technology Advanced and practical: Different from infrared technology, it solves the problem of incorrect touch caused by chalk dust falling on the infrared frame or blocked by the sleeve.Precise touch: higher precision and better sensitivity. Compared with the infrared touch technology invented 25 years ago, it has better stability and more advanced.Convenient operation: Meet with teachers' daily habits, support multiple people writing on it at the same time, five-finger erasing, ten-finger switching screen. Green-eye protection Edutech Smart Blackboard also has the advantage of eye protection. Our company used spectrum shift technology to completely remove blue light of 415 to 455 nanometers that is harmful to human eyes. This ensures green and healthy eye protection and has Chinese optic protection accreditation. There is no safety or maintenance issue because the screen is blast proof and scratch proof. The screen is also anti-glare. The display effect is very lifelike because our product uses 4K High Definition display screen.   Six-in-one application software, easy to operate Edutech Smart Blackboard contains a six in one software with functions of documents camera, electronic whiteboard, wireless projection, PowerPoint annotation and replay. By clicking one button, the user can employ the according function. For example, when teacher is about to demonstrate a test paper or courseware, the teacher only needs to gently put the paper on the documents camera platform and click "Projector". It is also easy to operate when the teacher wants to annotate while explaining the courseware. Just directly annotate on it! For example, the sixth question's answer is C. You can directly write on the screen to annotate. If you want to explain one specific question, it is also quite simple. Just click Snapshot and crop out the fourth question and insert it into the whiteboard. Then, you can continue to explain and make further annotations. The whole process is very easy and convenient.   High-cost performance Edutech smart blackboard has high-cost performance, including not only the traditional touching function, but also the functions of computers, high-speed cameras, etc. You can write on the whole page when the power is turned off.   4K high-definition display   Scratch-proof Our smart blackboard is scratch-proof and solves the storage problem of the equipment.