Looks like maybe LG 27UD88 (4K, 27")?
- http://www.imore.com/best-usb-c-monitors-mac-so-far
- https://9to5mac.com/2016/11/22/best-4k-5k-usb-c-displays-macbook-pro/
- http://gear.lifehacker.com/the-best-monitor-for-your-macbook-is-all-usb-c-1793530640
- https://www.macrumors.com/review/lg-27ud88-display/
Edit (27 Mar 2018) Be careful about retina resolution issues https://bjango.com/articles/macexternaldisplays/
Here’s the list of the USB-C Monitors for MacBook Pro, MacBook Air, iMac Pro: https://www.howtoisolve.com/best-usb-c-monitors-for-macbook/