Good to know- The set includes 2 handles and 2 brush heads so you don't have to argue with your loved one over who gets the first turn- The brush uses 2D cleaning, oscillating and rotating to effectively remove plaque and dirt- Once the green bristles turn yellow, you know it's time to change the brush head- If your gums need gentle handling, you'll appreciate the gentle brushing modes- With the 2-minute timer you won't need to guess whether you've brushed for long enough