Specs side by side

Fitbit Charge 6 compared with Apple Watch Series 10 (GPS, 42mm)
SpecificationFitbit Charge 6Apple Watch Series 10 (GPS, 42mm)
Typical price£120–£140£350–£400
Editorial score8.4/109.0/10
Best forRunners who want GPS without a bulky watchiPhone owners who want the best smartwatch integration
Main drawbackSubscription needed for deeper insightsExpensive
BatteryUp to 7 days (manufacturer)Up to 18 h (manufacturer)
DisplayColour AMOLEDOLED, always-on
GPSBuilt-inBuilt-in
Heart rateYes—
Sleep trackingYes—
SpO2Yes—
SubscriptionFitbit Premium for some insights—
Water resistance50 m50 m
Case size—42 mm
Cellular—Optional
Compatibility—iPhone only
ECG—Yes

Our verdict

Choose the Charge 6 if you want built-in GPS, sleep and heart-rate tracking, and a battery that lasts most of a week. Choose the Apple Watch Series 10 if you use an iPhone and want apps, a large display and the deepest integration with your phone. The Fitbit is the better fitness-first value; the Apple Watch is the better all-round smartwatch.

Choose the Fitbit Charge 6 if…

  • Runners who want GPS without a bulky watch
  • Buyers who prioritise battery life
  • People who mainly want fitness and sleep tracking

Choose the Apple Watch Series 10 (GPS, 42mm) if…

  • iPhone owners who want the best smartwatch integration
  • Buyers who want health features and apps
  • People who charge their watch daily anyway