I replace it from Charge 3 as I wanted to use build in GBP. It worked well at first time but I realized build in GPS consume a lot of battery. I won't last more than 1.5h or 2 h.
I believe Fitbid release the latest firmware update to allow users to use Dynamic GPS mode that Charge 4 uses the GPS sensors on the neaby phone to avoid battery consumption.
That mean if you have Charge 3, you don't need to change it.
OS | IOS, Android |
---|---|
Product Dimensions | 24.7 x 2.88 x 1.25 cm; 0.5 Grams |
Batteries | 1 Lithium Polymer batteries required. (included) |
Item model number | FB417BKNV |
Connectivity technologies | Bluetooth |
Additional Features | Wireless |
Other display features | Wireless |
Device interface - primary | Touchscreen |
Form Factor | Wristband |
Colour | Storm Blue |
Included Components | 1 x Fitbit Charge 4, 1 x Classic wristbands (both small and large), 1 x Charging cable |
Item Weight | 0.5 g |