Martex Sleepwarmer Super Soft Heated Raschel Blanket - King Dual Sensing system: Automatically adjust for gentle warming. Features two complete sensing systems, providing precise temperature regulation and complete overheat protection. Self diagnostic solid state control: features 11 heat settings, 10 hour shutoff and LED display with dimmer. Indulge in the deep plush softness of this 100% polyester raschel knit blanket. Automatic prewarm button quickly heats up your bed.