【Rugged Series】Durable Thunderbolt 3 to Mini Displayport Adapter, high-quality build protects against corrosion while maximizing signal strength - 100% Pure copper conductors, Triple Cable Shielding, 24K Gold-plated full metal jacket connectors. 【Audio Video Sync 】Connect USB Type-C / Thunderbolt 3 Enabled Phones and Laptops to 4K UHD TV, projectors, A/V Receiver, etc. Transmits high-definition video and audio from your computer to an HDTV for video streaming or gaming. 【Enjoy 4K@60Hz】This USB C to Mini Displayport Cable Adapter supports video resolutions up to 4K@60Hz and 1080p (Full HD) and uncompressed digital audio channels, enjoy home theater with 4K high resolution.