Here is an interesting docking station that lets you connect your Windows laptop to dual-4k displays and multiple peripherals. The Thunderbolt 3 Dual-4K Docking Station from StarTech supports 2 4K 60Hz displays (4096 x 2160p each). You get a USB 3.0 port in the front for your tablet or smartphone.
The device also has two USB ports (USB-C, USB-A), one Thunderbolt 3 port, microphone input, and audio output. The TB3DK2DPW docking station is available for $245.99.