[. . . ] After cleaning, make sure the charging base or charging travel case is completely dry before you connect it to the mains. warNiNG - Check if the voltage indicated on the appliance corresponds to the local mains voltage before you connect the appliance. [. . . ] - Do not use other brush heads than the ones recommended by the manufacturer. - Supervise children while they are brushing until they have established good brushing habits. - If your toothpaste contains peroxide, baking soda or bicarbonate (common in whitening toothpastes), thoroughly clean the brush head with soap and water after each use. If handled properly and according to the instructions in this user manual, the appliance is safe to use based on scientific evidence available today. Read `Travelling with your Sonicare' for additional charging methods. the charger glass is designed to properly charge only one handle at a time. Do not place metallic objects in the charger glass, as this may affect the charging process and may cause the charging base to overheat. Brush - Move the brush head slowly and gently across the teeth in a small back and forth motion so the longer bristles reach between your teeth. The Quadpacer is an interval timer that beeps and briefly pauses to remind you to brush the 4 sections of your mouth. Depending on the brushing mode you have selected, the Quadpacer beeps at different intervals during the brushing cycle. White - Whitening mode of 2 minutes to remove surface stains, plus an additional 30 seconds to brighten and polish your front teeth. polish - Quick 1-minute mode to brighten and polish your front teeth. Gum care - Complete mode combines Clean mode with an additional minute to gently stimulate and massage your gums to improve gum health. Clean White Polish Gum care Sensitive Easy-start - The Sonicare may feel ticklish upon first use. [. . . ] If you need service or information or if you have a problem, please visit the Philips website at www. If there is no Consumer Care Centre in your country, go to your local Philips dealer. [. . . ]