In November, Fitbit is opening up a Sleep Score Beta program to qualifying Fitbit users that will use the Charge 3’s SpO2 and heart rate sensors to assess your sleep quality and rate it out of 100. With that information, Fitbit can tell if you experience breathing disruptions while you sleep. Like Fitbit’s Versa and Ionic smartwatches, the Charge 3 has an SpO2 sensor for measuring blood oxygenation levels. The Charge 3 didn't automatically track runs at launch, but Fitbit fixed that with an update in December. The redesigned touchscreen display makes it easier to swipe through metrics while running, but I’d prefer to see more stats on-screen at the same time rather than having to swipe with sweaty fingers to see current pace, average pace, heart rate and time. But as Fitbit prepares to move into health diagnostics (more on that later), accuracy will become essential. This isn’t a huge deal in terms of activity-tracking, because heart rate is more useful to gauge trends and overall fitness level. The Charge also lagged behind the Polar by more than a minute in the beginning of my run when my heart rate jumped up to 156. The Charge calculated my max heart rate at 173, while the Polar reported 180 BPM. After a 3+-mile run, the Polar chest strap calculated that my average heart rate was 163 the Charge 3 estimated the average was 158 BPM. I tested the Charge 3 against a Polar H10 chest strap, the gold standard for consumer-grade heart rate-monitoring, and found that the band accurately measured my BPM while resting, but wasn’t spot on while running. The sporty bands are thicker than the leather options but also fit more comfortably around my wrist. But the taller screen makes some of Fitbit’s accessory bands, like the Horween leather strap I tested, sit awkwardly on my arm. The company’s goal is to put more information on your wrist at a glance, which is a good thing. The biggest change on closer inspection is the display, which is 30 percent larger than its predecessor’s. Design: Subtle but meaningful changesįitbit isn’t reinventing the wheel with the Charge 3, which looks identical to the Charge 2 at first glance.
You can order the fitness tracker directly through Fitbit's website or from a variety of third-party retailers, including Amazon and Best Buy. The Fitbit Charge 3 is available to buy now for $149.95. New sensor for sleep insights: An SpO2 sensor will be used to alert users enrolled in the Fitbit Sleep Score Beta program if they experience breathing disturbances.Connected GPS: The Charge 3 quickly latches on to your phone’s GPS, but built-in antennas would be more convenient.Swim-tracking arrives: The Charge 3 is water-resistant, unlike its predecessors, so it can track pool workouts.7-day battery life: You can easily sail through a week on a charge, even with daily workouts.Bigger touchscreen display: The Charge 3’s responsive screen is 30 percent bigger than the Charge 2’s, which makes viewing information a lot easier.
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