New Single Bottle And Re-designed Three Bottle Gel Warmer Warms Ultrasound Gel To Body Temperature. Durable Wall-mountable Construction With Warranty. Available In 120v And 230v Hospital Grade Plug And Power Cord Ul And Csa Listed Maintains Constant Temperature Low Electrical Demand High Density Impact-resistant Composite Heat Indicator Lamp Adjustable Thermostat (multi-bottle Unit Only) Illuminated Power On/off?switch (multi-bottle Unit Only)