Colgate's latest AI-powered smart toothbrush starts at $50

Smart toothbrushes have been around for a few years now, but they haven't quite caught on. Sure, they promise better habits via connected sensors, but they also tend to be very expensive ($100 and up). Colgate, however, has come up with a potential alternative. Called "hum by Colgate," it's a smart toothbrush that's more affordable. The rechargeable model is $69.99, while the one with replaceable batteries is only $49.99, which isn't that much more than a non-smart electric toothbrush.