360° U-Shaped Full-Cover Cleaning: The ergonomic U-shaped silicone brush head fits all teeth perfectly, cleaning hard-to-reach spots effectively.High-Frequency Vibration for Deep Clean: Powerful sonic vibration removes plaque, tartar, and stains, fighting yellow teeth and bad breath easily.90-Minute Fast Charge & 10-Day Battery: Quick 90-minute charge supports up to 10 days of daily use, ideal for home and travel.Ultra-Low Noise Operation Below 60dB: Runs quietly under 60dB, won’t disturb others, perfect for early morning or late-night brushing.Simple One-Button & Lazy-Friendly Design: Just press once to start auto-cleaning, great for busy people, beginners, and those who hate brushing.