I think I was awake until at least 3 or 4 AM, and I woke up well before 8 AM. While the Charge accurately recognized that I got up in the night on June 5 and stayed awake for about two hours, it didn't record that I still couldn't fall asleep when I returned to bed. I was initially happy with sleep tracking, but over time, I noticed that the Charge 4 is easy to confuse.
Needless to say, the battery was dead when I returned to the tracker a few hours later. On one occasion, I didn't pay attention when I attached it to the flimsy 3-pin charging claw and didn't align it correctly. The most annoying aspect of the Charge 4 is still charging, though. I feared that I might run into the dreaded Fitbit Bluetooth issues, but to my delight, that has not been the case - notifications are synced almost instantly, and the few delayed messages I got can be blamed on Android's battery management rather than on Fitbit. I've left the Fitbit Charge 4 on my right wrist over the last month after publishing the review to get an even better picture. When you don't use it, the Charge 4 easily reaches the promised seven days of battery life for me, and that's with raise-to-wake and 24/7 heart rate monitoring - I only turned off the former during the night using Sleep Mode. You might think that a device like the $30 Xiaomi Mi Band 4 is just as good at these things, minus onboard GPS, but when I used both bands in tandem, the Fitbit Charge consistently offered more accurate readings regarding distance.įitbit promises up to 5 hours of continuous GPS, which seems accurate judging from my rides and runs.
I can't speak for swim-tracking, though, since pools are closed at the moment. The same is true for GPS - it almost perfectly traced the paths I've taken while running and biking. You need to swipe away one of the standard workouts before you can add others to the Charge 4.ĭuring some at-home quarantine workouts, Fitbit routinely told me that I burned about as many calories as indicated by the training app I've used, so I'm confident it tracks my activities accurately.
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