The Authentic Soomook Hato K-One Mod is a high end regulated device that is powered by ST chipset. With dual 18650 batteries (not included), the wattage can be varied from 5 to 238W. Hato K-One supports various modes, like power mode, temperature control mode, memory mode and bypass mode. The resistance range is 0.1 to 5ohm (VW), 0.06 to 1.3ohm (TC). The 510 connector is spring-loaded to match most atomizers in the market.