1.4-in-1 docking station is small and compact, with multiple requirements and expansion at the same time .Support four simultaneous use of sn projection, transmission, and play while filling2.4K HD-3D visual effect supports 4K * 2K (3840 * 2160) @ 30Hz refresh rate. The video output is exquisite and vivid .Build a private cinema with mobile phone / tablet TV, immersive large sn view, enjoy watching movies / games more.3.Improve office efficiency external display, large sn clear display, double efficiency .Connect the large sn without daing the eyes, and put the learning video to the large sn display, without looking down at the small sn to protect the child's spine and vision.4.It can be connected with a variety of USB devices, and can be connected to USB flash disk, mouse, keyboard, mobile hard disk and other devices to solve the problem of single laptop interface .Video / picture can be read at any time u disk is connected to mobile phone / tablet, OTG function is extended, and mobile office is more convenient5.Video entertainment is smoother, supporting 5v-2a charging, charging Entertainment. Ingenious craftsmanship, exquisite aluminum alloy material, anodized technology, wear-resistant and corrosion-resistant, the same process as , delicate Press .Light and portable, no burden, small, no space, easy to load into briefcaseresolving power: HDMI:4K * 2K@30Hz resolving powerCharging power: support 5v-2a chargingWire: PVCCore: tinned copper wireUSB: 1 x USB3.0 + 1xusb2.0 interfaceWire length: 11.5 cmsize:80 x 12 x 29mmMaterial:Aluminum alloy + ABScolour:grayPackage Contents:1 x Docking stationOnly the above package content, other products are not included.