The Tetsu helm lasts for 10 hours of combat before degrading to nothing. Unlike the superior version, it is tradeable and cannot be repaired on an Armour stand. Equipping the helm will cause it to instantly degrade and become untradeable. When dying in the Wilderness, a helm will be turned into 500,000 coins which will be dropped on the ground. Otherwise, it will lose 10% of its charge upon death.