Introduction:
Decibel: less than 50 db, very quiet
Vibration Frequency: 28000-31000 times/min
Power supply: USB charger
Charging time: 4-6 hours
Feature:
2 minutes smart timer
30 seconds pausing reminder
3 Speed Adjustment Mode( Clean, Soft, White)
Package contents:
1 Electric toothbrush handle
4 replacement heads
