Our Extension Pack allows you to continue tracking your child’s heart rate, oxygen level, and sleep trends up to 5 years of age. The included toddler-sized fabric sock works with your existing Sock 3 sensor, and our optimized technology continues to provide accurate readings as your child grows, between 30lbs to 55lbs.
Continue to monitor your child through every milestone—from teething to toothfairy.
Included: Two toddler-sized socks, for left and right feet (30lbs. to 55lbs.)
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