Mega Ten Kids Sonic Toothbrush helps your children developing good habits of brushing their teeth. FEATURES Cleaning: 20 times more of an outstanding fine spraying effect than others Safe: Regular and smooth sonic waves Convenient: A compact grip feel to fit comfortably a child’s hand for easy self-brushing Educational: 2 minutes auto-off timer for a recommended brushing time. Encouraging: Look inside the mouth by lightening up with the white flash. HOW TO USE Parents should watch children not to keep holding the toothbrush in a mouth like a teether. Too much chewing a toothbrush may cause damage to the shape of washer rings, which results in bristles pulled off. This fine head brush should be kept in a clean place without dust after use. Beware of poor imitations. Specification Replace toothbrush head when bristles spread apart or when they become hard and white coloured. Average lifetime is 3 months. PRODUCT INFORMATION Product Size: 140 x 35mm Bristle Fitness: DuPont Tynex Recommended Age: 1-4 years+ Vibration mode:Sonic Vibration Vibration rate:16,000 per min