Electric Toothbrush Smart Toothbrush Ultra Automatic Toothbrush USB Wireless Charging Adult Waterproof Toothbrush S100 Main Features High cleaning frequency: up to 39,600 times per minute Helps improve scientific brushing habits: automatically pauses for 0.5 seconds every 30 seconds and turns off after 2 minutes, the recommended brushing duration Round brush head with Dupont bristles: helps prevent gum damage and provides deep cleaning, including hard-to-reach areas IPX7 full-body waterproof rating for thorough rinsing Up to 60 days of usage based on twice-daily brushing (2 minutes each time) Two-button design: one button to select cleaning modes, one to adjust intensity levels 5 cleaning modes: Clean, Sensitive, Massage, White, Polish Wireless charging capability Charging time: under 10 hours Package weight: 550g All data from SAMO Technology Lab