- With bristles that differ in stiffness and size - recommended to be changed every 3 months
- With most of the electronic components
- Turn toothbrush ON/OFF or change the strength or mode of brushing
- Tells the user the current strength setting
- Warns user when battery is low
- Plug in and place the toothbrush on it
- For travel
Needs inteded to fulfill (prioritized) based on users' responses:
- Clean teeth at at least the same level as a manual toothbrush
- Able to use anytime - no point if it does not turn on
- Thoroughly clean teeth - remove more plaque than manual toothbrush
- Doesn't require effort in brushing - minimal strength needed to clean
- Easy and comfortable to hold
- Bristles are able to withstand at least 3 months of use