Died before a year and now won't work at all

Bought this for my 7 year old. He loves it! It suits us perfectly. He can wear it while swimming and it encourages him to get his 60 minutes of activity every day. It's perfect for our needs. Update: first battery died 9 months into wearing it. Replaced the battery and it worked another few weeks but has shut off again. Didn't even last a year! Changed my 5 stars to 3 because it didn't last for what we paid. I could've bought a cheaper version if it wasn't going to even last a year.

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