Easy-to-switch replaceable Philips BH102203 one 2-pack electric brush head for your new electric one. To keep your brush fresh, change it every 90 days. Which color is your one. Think of the one as a powered version of your manual toothbrush. Micro vibrations and contoured bristles gently clean and polish your teeth at the touch of a button. From Miami to midnight, mango to mint, choose the color to match your style. You can mix and match the brush head with the handle and create your own color combination. Maintaining your toothbrush should be easy. Subscribe to have replacement brush heads and a new battery automatically delivered to your home every 90 days. No worries, just great teeth. Brush with the one for 90 days on a single AAA battery. That is three months of whiter, brighter smiling.