This OMRON electric toothbrush uses sonic vibrations at 18,000 oscillations per minute, offering approximately 3 times the plaque removal power of a manual toothbrush. - Brand: OMRON - Model Name: HT-B223-B - Vibration Frequency: 18,000 oscillations/minute - Power Source: 1 AA battery - Features: Approximately 3 times the plaque removal power of a manual toothbrush - Features: Sonic vibrations for quick brushing Returns are not accepted. Please consider this before purchasing. Thank you for viewing.