Product Features:

USB TYPE C to Mini DisplayPort (Mini DP, MDP) Converter connects a computer host with a USB Type-C female port to a monitor or projector with Mini DisplayPort input.
Transmits both video and audio, compatibility with displays, monitors and projectors with Mini DisplayPort port. A Mini Displayport cable is required.
Easy Use: No installation extend drivers or power required.
Support video resolution for high definition resolutions up to 4K*2K(3840*2160) at 30Hz. Backward compatible with 1080p.
Aluminum Housing of this USB-C to Mini DisplayPort adapter matches with your elegantly, with slim and portable design, you can easily slip it into your bags.
Specifications:
Material: Aluminum alloy
Size: About 160*22*12 mm
Connector A: USB 3.1 type C male 
Connector B: Mini DisplayPort female

Notice!!!
1. This adapter is compatible with laptop only, it will be not compatible with Smart Phones, Tablets or Tablet PCs.
2. Your laptop must support "DisplayPort Alternate Mode" (Alt Mode) via USB-C.
3. If the product doesn't work, please connect the adapter to your devices first, then restart your devices.
4. Warm reminding: For some compatible devices, it might take a few seconds for the data to synchronize from computer with your monitor, please be patient.
5. DO NOT connect any other adapters/converters (like Mini DisplayPort to DP/HDMI/VGA/DVI adapter) to this USB-C to Mini DisplayPort adapter for a second signal convert, we can't guarantee it works well.
6. This USB C to Mini DP adapter is NOT compatible with Thunderbolt interface's monitor. It just can be used for Mini DisplayPort to Mini DisplayPort cable to connecting the monitor. It can not be used for Mini DisplayPort to DisplayPort cable/adapter, Mini DisplayPort to HDM cable/adapter, Mini DisplayPort to DVI cable/adapter or Mini DisplayPort to VGA cable/adapter to connecting the monitor.
7. This isn't a bi-directional adapter. Can only convert signal from Type-C to MINI DP port.
8. 4K resolution requires a 4K equipped source, Mini DisplayPort cable, and output display.
Package Included:
1 X USB 3.1 Type C to Mini DisplayPort Adapter