miracast electronic whiteboard for online teaching

{"cid":"91220330","title":"75 Inch 4K UHD Smart Digital Blackboard with Multi-Touch for Interactive Teaching","imgUrl":"https:\/\/img.chinax.com\/nimg\/84\/73\/d9d7c5f5fd19ef2683b3f19a753e-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"MTHGH","Model Number":"XYC-75","Minimum Order Quantity":"1 Set","Delivery Time":"7-10 Work Days","Screen scale":"16:9","Sound System":"D\/K, B\/G, I,M","Working temperature":"0~40(\u00b0C)","Rated voltage":"AC 100V-240V\uff5e50\/60Hz","Android system":"9.0,11.0,13.0","Size":"75 inches","Support touch points":"20\/32\/40 Points","Color":"10bit,10.7","Android DDR3":"3G,8G","Rated current":"3.5A","Viewing angle":"178\u00b0","Touch response time":"<15ms","Video format":"PAL,NTSC,SECAM","Android EMMC":"32G,64G","Brightness":"350 cd\/\u33a1","Certification":"CE FCC","Place of Origin":"China","Payment Terms":"L\/C,T\/T,Western Union","Supply Ability":"10000 Piece","Packaging Details":"Standard carton package : carton+ plastic bag+ foam+ honeycomb paperboard+ pack thread.","Resolution":"3840*2160","Positioning accuracy":"\u22642mm","Contrast ratio":"1200:1"}}