Features: and 2 in 1 expansion dock adopts aluminum alloy for shell to accelerate heat dissipation and stable performance.Dual HDMI-compatible display interfaces expansion meet your multi-interface expansion needs.Small size and portable, easy to travel, easy to put in a briefcase, no burden on you.for Shell material: aluminum for shell with excellent metal texture.HDMI-compatible interface supports 4K 30Hz resolution give you a cinema-like experience. Specifications:Product Name: Type-c to Dual HDMI-compatible HubType-C interface (input): compatible devices need to support Type-c HDMI-compatible interface: Support for HDMI 4K 30Hz 60HzUSB3.0 interface: data transfer rate up to 5 Gbit/sfor Shell Material: Aluminum for shell with excellent metal textureSize: approx 5.6x4.75x1cm/2.2x1.87x0.39in Note:Only the above package content, other products are not included.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 is1-3cm. Package includes:1 PC x 2 in 1 Docking Station", Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.