Necklace of Talos

This necklace can be found in a city (i cannot remember which one it is) but when you enter the city there will be a man being executed as soon as hes is killed, within 5 seconds, if you search him you willl find the amulet of talos this necklace will allow you to shout 20% faster. this helped me greatly through the game i hope it will help you.