Oral-Bs best cleaning with revolutionary iO technology for a professional cleaning experience and a gentle feel. It combines Oral-Bs unique round brush head with gentle micro-vibrations for a fresh and clean mouthfeel and 100% healthier gums in one week compared to a conventional manual toothbrush. 3 brush modes to customize your brush: Cleanliness, Softness, White The intelligent pressure sensor warns you with a red, white, or green indicator if you are applying too much pressure, not enough pressure, or if you are brushing your teeth just right. Package contents: 1 x iO3 handle, 1 x brush, 1 x charger, 1 x brush holder