Fitbit Fitbit Ace 2 sells on Amazon. I think the price is very good. Please read some of the reviews and see people thought of the product. Check how you might qualify for a free shipping offer if available. 

  • Steps & active minutes tracking let kids skip, jump & move their way to a healthier life
  • Kids earn virtual badges and fun on-screen celebrations when they reach their goals
  • Bring on the pool party cannonballs or lunchtime spills—Centauri Kids is swimproof (water resistant to 50M)
  • Kids spend less time charging & more time moving with up to 5 days of battery (varies with use and other factors)
  • Pair Centauri Kids to a child account to access a limited Kid View. Kids can also challenge their friends to step competitions & send each other messages or cheers in-app

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