X1 Extreme 1st Gen ThinkPad

Type 20MF

https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_X1_Extreme/ThinkPad_X1_Extreme_Spec.PDF

https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Extreme-i7-4K-HDR-GTX-1050-Ti-Max-Q-Laptop-Review.335608.0.html

Build quality - definitely NOT military grade toughness. Screen already prone to white spots (pressure marks) unlike the sturdy Dell XPS 15.