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 Hisense 42K680, 42", 3840 x 2160 pixels, 4K Ultra HD, 3D, DVB, Silver Hisense 42K680. Display diagonal: 42", Display resolution: 3840 x 2160 pixels, HD type: 4K Ultra HD, Screen shape: Flat. 3D. Motion interpolation technology: SMR (Smart Motion Rate) 400 Hz, Native aspect ratio: 16:9. Digital signal format system: DVB. Product color: Silver