This Apple MacBook Pro 15" mid-2012 features a 2.30 GHz Intel Core i7 3rd Gen processor, 16 GB RAM, and a 1 TB SSD (Solid State Drive) storage type. 
It has a discrete GPU, an NVIDIA GeForce GT 650M, as well as integrated Intel HD Graphics 4000. 
This MacBook Pro has a 15-inch screen size with a maximum resolution of 1400 x 900. 
It also comes with Bluetooth, built-in webcam, optical drive, Wi-Fi, 10/100 LAN card, backlit keyboard, and built-in microphone. 
It has connectivity options such as HDMI, SD card slot, USB 3.0, and gigabit Ethernet. 
The current operating system is macOS 10.14, Mojave (I never upgraded to Catalina because that OS will no longer run 32 bit apps).

Because is an Intel processor, can still Bootcamp Windows (up to Windows 10) in a separate partition.

This is one of the last models where you can easily replace RAM, SSD/HDD or battery yourself by removing bottom of laptop.

Battery is currently 77.8% of original capacity, according to Coconut battery. 

There are no dents or dings; there is some minor scratching on the bottom from normal use (I have been using this computer almost every day since I originally got it).

Apple charger is included.

Full tech specs available here: https://support.apple.com/en-us/112568