These sonic toothbrushes operate at a frequency of up to 16,000 movements per minute. The toothbrushes make it easier for you to clean the back teeth with its tiny brush heads. They are a great substitution for manual toothbrushes. 

• Frequency: 16,000 movements per minute.
• 2-minute brushing time.
• 30-second intervals.
• With LED light.
• Waterproof.
• IP rating:
• Non-slip handle.
• Changeable brush head and battery.