Emmi-dent Metallic - Basic Set Blue - Toothbrush 2-pin system - optimised timing Up to 96 million multi-frequency oscillations/minute 12-day battery life (2x3 minutes daily) Vibration can be switched off completely. Don't scrub away your precious enamel, just hold the brush head to your teeth and it will do the rest for you. Healthy and bright white teeth are the result of patented technology. The abrasion-free application prevents damage to the teeth, enamel and gums. The result is noticeably smooth teeth. Bacteria are reduced and the oral cavity remains fresh for longer after cleaning.