Choosing the right smart board involves more than just selecting a screen size. Some of the most important features include: 4K display resolution Multi-touch support Anti-glare tempered glass Wireless screen sharing Built-in Android system Smooth touch response is especially important for writing accuracy. Laggy systems can negatively affect user experience. Connectivity is another key factor. Smart boards should support HDMI, USB, WiFi, and screen casting for easy device integration. Buyers should also consider after-sales support and software compatibility before making a decision.