When it was released (2018), it was one of the world’s most powerful mobile workstation. 
For configuration , see Service Tag: 1TRX6S2. They are all similar to this Service Tag. 
  
Good battery health 

Windows 11, Microsoft Office (not sure if the license of Microsoft office is genuine or not)   ,....
it is used item , so it does have some sign of small scratch or normal use.   
Thunderbolt ports, includes 240W Watts AC Adapter/charger Camera , + Dual Pointing Backlit Keyboard Qualcomm QCA61x4A 802.11ac Dua l Band, 2x2, Wireless Adapter + Bluetooth 4.2 Driver 6-cell 97Wh Lithium Ion battery with ExpressCharge E5 240W 7.4mm Lot 6 PCR, Liteo n

Total Of 500GB = (one 256GB PCIe NVMe and two 124GB) Solid State Drive

 389-CGBC : Intel(R) Core(TM) i7 Processor Label 379-BDCK : Intel Core i7-8750H (Six Core 2.20GHz, 4.10GHz Turbo, 9MB 45 W) 370-ADFW : 16GB, 2X8G, DDR4 2666MHz Non-E CC Memory intel Core i7-8750H, Six Core 2.20GHz, 4.10GHz Turbo, 9MB 45 W, w/Intel HD GFX System Shipment Material Mobil e Precision 17.3" FHD/HD, WLAN/WWAN Cover

Service Tag: similar to 1TRX6S2, Dell Support Services: Expired 16 DEC. 2021



Specs
CPUIntel Core i7 7th Gen
RAM16 GB
Storage500 GB (three hard drive slots) 

(one 256GB PCIe NVMe and two 124GB SSD)

OSWindows 11
Display17"
BatteryExcellent 
Dedicated GPU Memory --------
WebcamYes
Networking

Ethernet, WiFi, Bluetooth 
Video OutputsHDMI
Charger / AC Adapter240 W, INCLUDED