1. 4K resolution output: This product can transfer high-definition audio and video from a phone or tablet to an HDMI-Compatible display for streaming and gaming with a resolution of up to 4k (3840x2160) @ 30Hz resolution.Resolution 4kHdmi Cable not over 2Meter2. Streaming from a smartphone: This product supports streaming from a smartphone, can play sports events directly on the phone, watch movies, games and display photos, albums, etc., and never miss the game-winning touchdown or your favorite TV Episodes. This product supports direct cable connection from smartphone to TV, so no longer worry about bad wifi playback problems.3. High-speed transmission: This product has USB 3.0 interface, transmission speed up to 5Gpbs, with ultra-high data transmission speed.4. Plug and Play: This product supports plug and play, without any driver or software, very convenient.5. 60W power supply: This product has a variety of functions, can support PD fast charger for laptop, very practical.Descriptions:1. This adapter allows you to transfer the contents of your device to an external monitor that accepts an HDMI connection (requires a separate HDMI cable) such as a TV, monitor, projector, etc.2. The cable for this product is suitable for Samsung Galaxy S8, 8+ plus, for huawei mate10 P20 (pro) and for MacBook with a Type C 3.1a connection. Compatible with Type-c 3.1a port Only .3. Not all USB-C interfaces are compatible:ONLY works for USB-C 3.1 or thunderbolt 3 port which support "DisplayPort Alternate Mode".Please refer to description's compatibility devices list, if not, It maybe can't compatible with this adapter.Specifications:Size: 158x56x10mmConnector A: USB 3.1 Type C MaleConnector B: 2xHDMI female + USB3.0 female + C femaleResolution: up to 4K (4k Hdmi Not Over 2Meter cable ,Hdmi CableOver 2Meter resolution Become 1080p )colour: as shownMaterial: ABSPackage Contents:1 x HDMI-compatible AdapterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.