Amazon has the hum by Colgate Smart Sonic Toothbrush with Travel Case in blue for $14.99 (regularly $29.99) for a limited time.

Walmart has it in blue, green or purple for $17.99 for a limited time.

The hum by Colgate smart battery operated toothbrush guides you to brush better by tracking the frequency, duration, and coverage of your individual brushing style to help you target spots that need extra love. With a brush that knows you and an app that shows you, hum sonic toothbrush makes seriously good oral care something to smile about with fun activities and challenges that help you improve you’re brushing while you earn points toward rewards.