Used this toothbrush twice, firstly the power button is situated right where my hand holds it so it keeps switching off. Also, the brush turns a lot because I have to keep switching it back on so the back of it rattles against my teeth, so much so it vibrated my crown right out of my mouth and I bit it. Just back from the dentist and a new crown will cost me £500! For me personally this toothbrush was a disaster so going back to my trusted Oral B brushes which I’ve been using without issue for over 20 years. Tried to upload a photo of my broken crown but it won’t allow it