Lavender Electric Toothbrush iO 4S The iO 4 electric toothbrush features advanced technology, combining a dentist-inspired round brush head with micro-vibrating bristles for a professional clean feeling at home. The smart pressure sensor prevents brushing too hard or too soft, protecting your gums and ensuring optimal cleaning. The Gum Guard alerts you if you apply too much pressure while brushing. Replace your iO Series refill brush heads every three months for best results. - Experience the ultimate cleaning with revolutionary iO technology for a professional clean and gentle brushing experience - Combines a unique round brush head with gentle micro-vibrations for a fresh, clean feeling and 100% healthier gums within a week compared to a regular manual toothbrush - Enhanced smart pressure sensor lights up red, white, or green to indicate if you are brushing too hard, too soft, or with the right pressure - Four brushing modes for a personalized experience: Daily Clean, Whitening, Soft, Super Sensitive Contents: 1 iO4 handle, 1 brush head, 1 travel case, 1 charger, 1 brush head holder