In the beginning of the war against man, Skynet only had a few prototypes of T-70 and decided not to use these precious models on the battlefield. The T-70 itself was used to guard important facilities. By the time Skynet was able to put the T-70 in mass production, most of the technology was outdated, so T-70s were never used very much as a warrior.
Intelligence: Primitive. Could be controlled or set to autonomous mode. No learning mode.
Material: Industrial-strength metals.
Weaponry: Specially made high-velocity gatling gun. Could be modified to use a light plasma weapon.
Weaknesses: Because of its lack of skin, large size, and primitive CPU, the T-70 was easy to spot and take down.
The Series 70 unit are similar To the Series 800 Terminator because its design might be based off the wreckage of the first Terminator after many attempts to make it in 3D on a computer in a Cyberdyne Systems factory.