Excellent Compatibility: Suitable for Apple TV, PS3, PS4, TV Box, ROKU 4, Apple TV, Blue-Ray / DVD player. 3 PORT: 3 HDMI ports for input and 1 HDMI port for output. Solve the problem of lack of ports to connect more devices. AUTOMATIC DISPLAY and manual switches: when a device is active, it will be automatically detected and displayed. If you want to switch to another device, there is a " Select " button that you can easily change. UHD solution: resolution up to 4K for ultra clear video, support for 3D movies. 480i, 480p, 576p, 720p, 1080i, 1080p available. Audio formats: LPCM, DOLBY AC3, DTS7.1, Direct Stream Digital. No distortion of audio or video, no delay in signal transmission. Plug and Play: No additional power is needed. Cable length: 50 cm (19.7 inches). Presentation: No distortion of audio and video. car screen and hand switch. No additional power required and no installation required. Resolution up to 4K, also supports 480i, 480p, 576p, 720p, 1080i, 1080p. Packing list: 1 * 3 port HDMI switch 1 * User Manual Specification: 3 HDMI inputs; 1 HDMI output Supported audio formats: LPCM, DOLBY AC3, DTS7.1, Direct Stream Digital Supported video: 24 bit, 36 bit Supported resolution: 480i, 480p, 576p, 720p, 1080i, 1080p, 4K Video bandwidth: 10.2 Gb / s or 340 MHz Operating humidity: -15 ° to 55 ° C Cable length: 50 cm (19.7 inches)