The Medescan Rainbow Mist is an Ultrasonic humidifier. An ultrasonic humidifier atomises water into ultra-fine particles of 1-5um using the principle of ultrasonic high-frequency oscillation and diffuses the cool water vapour into the air through a pneumatic device to serve the purpose of even air humidification. **FEATURES** * The Medescan Rainbow Mist is specifically designed to humidify the air with cold vapour using ultrasonic high-frequency oscillation. * The Rainbow Mist features a Seven Colour LED night light. The light can be set to cycle through all seven colours or set to your favourite colour. * The Rainbow Mist’s adjustable vapour flow puts you in control of your environment’s humidification. * The Aromatic Diffuser allows you to diffuse your favourite oil or water-based aroma. * The silent operation will ensure your loved ones get the best night sleep possible. * The Rainbow Mist will give you 10 hours of continuous use if run at a maximum flow rate. If running at a low flow rate, the Rainbow Mist will give you up to 20 hours of use. * The Rainbow Mist’s two-year replacement warranty will give you great peace of mind. **FILLING INSTRUCTIONS** * Remove the vapour nozzle from the water tank. * Invert the water tank and turn the filter cap counter-clockwise. * Remove the cap and the attached filter. (It is highly recommended to replace the filter after approximately 500 hours of operation.) * Fill the tank with clean water at room temperature. * Screw the cap and filter, wipe off excess waterdrops around the water tank. * Put the water tank back on the base. Secure the nozzle on the water tank.