The DLNA Certification and Logo Program is designed to ensure that DLNA Certified products have implemented the features necessary to comply with the DLNA Guidelines, and that they will in fact interoperate with other similar devices when connected to those devices in a consumer's home environment. The DLNA Certification and Logo Program enables companies to certify their products through a well-defined and rigorous process. Y LG OLED55B7D, 139.7 cm (55"), 3840 x 2160 像素, 有机发光二极管（OLED）, Smart TV 智能电视, 无线局域网连接, 白色 LG OLED55B7D. 显示器尺寸（对角长）: 139.7 cm (55"), 显示器分辨率: 3840 x 2160 像素, HD 类型: 4K Ultra HD, 显示技术: 有机发光二极管（OLED）, 屏幕形状: 平面屏幕显示器. Smart TV 智能电视. 数字信号格式系统: DVB-C, DVB-S2, DVB-T2 HD. 无线局域网连接, 以太网连接器. 产品色彩: 白色