Adidas Zone
DescriptionThe Zone is an activity tracker for the wrist that offers real-time feedback via a digital display. It tracks heart rate and nothing else, the idea being that the only thing that matters is that the child is moving.
Tech specs 
Age range5+
SizeOne size fits all
MaterialSilicone
Battery30+ hours of battery life, rechargeable
Water resistanceSplashproof
DisplayDigital display
OtherThe tracker also sends the data to IHT’s system, called the IHT Spirit System. PE teachers can tap into this to view students’ activity and heart rates to figure out which children need extra attention to reach their target goals.
FUNCTIONS 
Activity trackingThe band will show a child’s heart rate and a color will indicate the level of activity being registered (low, moderate or vigorous).
Smartwatch functions
Safety functions
Other
LINKS 
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Amazon US rating
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