Fred Carson was a radio engineer who enjoyed traveling. While on a trip to Tibet, he met a yogi who put him through a series of rigorous tests. Fred passed, proving that he had the physical and moral strength to do good. As a reward, the yogi gave him a magic ring. Fred used it to fight for humanity and justice as WonderMan.
The ring produces a bio-electric field that effects a system-wide enhancement to Carson’s body, granting him superhuman abilities like super-strength, endurance, durability, etc.