Re: Toothbrushes
Ah, they don't just have Bluetooth connectivity, they also have an associated app.
I actually investigated this sort of thing out of incredulity. It seems you attach the toothbrush by Bluetooth to your phone, and it times how long you're brushing your teeth, so you know when you've done two minutes. Seems a bit of a faff to me.
OR...you could buy the cheaper one which costs about thirty quid from the same manufacturer, which does a little buzz every 30 seconds to tell you to change quadrant, and a further long buzz after two minutes.
Not exactly the toughest buying decision I've ever made.