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This 65 inch digital board for teaching is a high - quality teaching device. Equipped with infrared touch technology, it supports 20 - point simultaneous writing, smooth and without delay. It is compatible with multiple systems and features such as wireless screen projection, facilitating efficient teaching interaction.link:https://www.qingvision.net/interactive-smart-whiteboard/educational-interactive-smart-whiteboard/65-inch-digital-board-for-teaching.html