Lenovo ThinkPad T420 review unit has the following specification:

14-inch anti-glare 900p display (1600×900 resolution, 320 nits brightness)
Windows 10 Professional 64-bit
Intel Core i5-2520M dual-core processor (2.5GHz, up to 3.2GHz Turbo Boost, 3MB cache, 35W TDP)
Intel QM67 chipset
Nvidia NVS 4200M 1GB dedicated graphics card
Automatically switchable to integrated Intel HD graphics via Nvidia Optimus graphics-switching technology
4GB DDR3-1333 RAM (1x 4GB; supports up to 8GB – 2x 4GB)
320GB 7200RPM Hitachi hard drive (HTS725050A9A364)
Intel Centrino Advanced-N 6205 wireless card
No internal Bluetooth
Integrated 720p HD webcam
Modular DVD burner
One-year limited warranty
9-cell battery (11.1V, 94Wh, 8.4Ah)
Weight: 5.34 lbs. w/ 9-cell battery (4.84 w/ 6-cell)
Dimensions: 13.4 x 9.05 x 1.18~1.20 inches.free del
Bahrain, Computers, BHD 75 / Lenovo ThinkPad T420Intel Core i5-2520M,4GB  RAM,320GB SATAHDD 1GBBahrain, Computers, BHD 75 / Lenovo ThinkPad T420Intel Core i5-2520M,4GB  RAM,320GB SATAHDD 1GB