The Sonicare DiamondClean Black Edition toothbrush is designed to whiten your teeth in just one week. The HX9352 includes 3 brush heads: a DiamondClean head, an AdaptiveClean head, and a bonus InterCare brush head. There are 5 cleaning modes: Clean for optimal plaque removal, White which removes surface stains, Polish brightens and polishes your teeth, Gum Care gently massages gums and Sensitive which is extra gentle on sensitive teeth. The battery recharges in the travel case or the charging glass. The HX9352 is Universal Voltage. It has a 28-day Money Back guarantee and 2-year warranty.