The Garmin Vivofit family of watches (version 1 thru 3) is an investment, but provides a lot of extras in addition to a basic alarm to help remind your kid to use the bathroom. There are several benefits over some less expensive watches. The first one is the ability to earn stars for completed tasks and chores. It has an interactive app that makes it easy to set reminders and earn rewards. I also like the various types of bands available for kids to choose from that make the device waterproof. Garmin has partnered with Disney so the band can reflect your child’s love of Marvel, Star Wars or Frozen. The battery life is great, as it does not have to be charged like other smart watches.