4 inches

{"cid":"104758","pid":"20805844","pimg_url":"\/\/img1.b2bforus.com\/a3\/87\/8b0fedf44d38\/product\/69041376_s-w400xh400.jpg","name":"Manufacturers Selling Advertising Ultrathin Type LCD Player Board Display Show LCD Panel 7 Inch Size","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable"}}

{"cid":"104758","pid":"20805834","pimg_url":"\/\/img1.b2bforus.com\/a3\/87\/8b0fedf44d38\/product\/69041324_s-w400xh400.jpg","name":"China Promotional Products Serial Display Screen Advertising Display Screen LCD Panel Kids 7 Inch Size","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable"}}

{"cid":"104758","pid":"20805823","pimg_url":"\/\/img1.b2bforus.com\/a3\/87\/8b0fedf44d38\/product\/69041269_s-w400xh400.jpg","name":"Maker 7 Inches Wifi LCD Advertising Player LCD Panel Kids Interactive Whiteboard 7 Inch Size","attrs":{"Price":"Negotiable","MOQ":"1 Piece","Delivery Time":"Negotiable"}}