Vornado SRTH Small Room Tower Heater, Black Signature V-Flow heat circulation with wide heating zone 2 heat settings with fan-only option Automatic safety tip-over switch and overheat shut-off protection Easy-to-use controls with 4-hour auto-off timer Backed by a 5-year limited warranty Built to meet U.S. voltage requirements. Certified, safety-tested, and warrantied for use only in the U.S.