Like if the average user uses it for 15 seconds, it might signal them that the existing brushes need to be wider/longer/arced, so users can clean their teeth ef

Like if the average user uses it for 15 seconds, it might signal them that the existing brushes need to be wider/longer/arced, so users can clean their teeth efficiently in that timeframe. And yeah, the usual electric toothbrushes are terrible slow since the brush heads are in the size of one teeth, instead of 3-4.