Overview
Saito had been mentioned by Motoko and Batou when they are talking to Togusa that he had no cyber implants on him. Saito only has his Hawkeye and left arm as artificial prosthetic with the rest of his body being natural, being needed for his sniper duties. His Hawkeye is not foolproof as it can be hacked by another party as proven when a rogue HAW-206 multi-ped think tank vehicle overwrites his Hawkeye use in order to confuse him.
He is also not patient with his teammates for most of the time when Saito is in Section 9-mandated operations with them, although he can be patient and cunning thanks to his mercenary combat experience in the field. Saito does not try to hide that he hates grunt work, but does so as he is a part of Section 9.
Read more about this topic: Saito (Ghost In The Shell)