Achieve up to 5x more plaque removal¹: gentle yet effective W Optimal White brush head with densely-packed bristles to target plaque and provide a refreshing clean Enjoy a superior clean with 31,000 bristle movements; Sonicare Fluid Action supports the bristles to clean by driving fluid deep between the teeth and along the gumline Helps protect your gums with the pressure sensor: a smart optic sensor detects excessive pressure − simply ease off when you feel gentle vibrations, and your gums will stay protected Personalise your cleaning experience with a sonic electric toothbrush that features 2 brushing modes − Gentle and Clean − and 2 intensity levels Easy Start feature facilitates the transition from manual to electric toothbrush with a gradual, gentle increase in brushing power across your first 14 cleans Optimise your brushing routine: every 30 seconds, the BrushPacer will prompt you to clean a new area; after 2 minutes, the SmarTimer will indicate your session is complete Rechargeable toothbrush providing up to 21 days of regular brushing after 1 full charge, with the illuminated icon indicating battery life; keep everything organised with the included travel case The set includes: 1x Philips Sonicare 4000 Series sonic electric toothbrush, 2x W Optimal White brush heads, 1x travel case, 1x charger