The HX6610-01 # is the internal manufacturing part number.
Improves gum health up to 100% better than a manual toothbrush. Includes 1 ProResults gum health brush head (standard)
Removes up to 6x more plaque along the gumline vs. a manual toothbrush
Three intensity settings for a gentle and comfortable brushing experience
Patented sonic technology delivers up to 31,000 brush strokes per minute
Two-color battery charge indicator lets you know when to recharge. 3 weeks battery life.