If something changes in one part of the family, other. parts will need to adjust as well. In addition, the family is part of other systems in. the community, so changes in one family will create imbalance and lead to changes. in other systems that surround that family.
The Fitbit Surge comes equipped with a rechargeable battery made of lithium-polymer. It takes roughly about 1 â 2 hours to charge a Surge fully. Fitbit Surge has the longer battery life of 7 days per charge than other Fitbit products.
The HR also uses a more traditional clasp instead of the Charge's snap-in band, and it gets five days of battery life instead of seven days. Sitting at the top of Fitbit's line up is the $250 Surge, which despite its smartwatch-like appearance is more serious about fitness tracking than any of Fitbit's cheaper models.