I created a screen-free streaming music device. I aimed it at runners, but it took off with kids instead.

Anthon Mendelson created the Mighty when his iPhone broke. Courtesy of Mighty Anthon Mendelson is the founder of Mighty, a screen-free streaming device company. He created the device for athletes and runners like himself, but it became a hit with parents. He believes parents love it because it fosters independence while still giving them control. This as-told-to essay is based on a conversation with Anthony Mendelson. It has been edited for length and clarity. I've always had a knack for t...