Fitbit Charge 6 Review: a no-nonsense fitness band with a few Google headaches

I’ve been using the Fitbit Charge 6 as my daily tracker for a while now, mainly for steps, sleep, gym sessions and to keep an eye on my heart rate. I came from older Fitbits and a cheap Chinese band, so I had a pretty clear idea of what I wanted: something light, reliable, and that didn’t nag me with too much nonsense. On paper, this one ticks a lot of boxes: built-in GPS, heart tracking, Google Wallet, Google Maps, 6 months of Premium, and a claimed 7 days of battery life.

In practice, it’s a mixed bag, but mostly in a good way. The core tracking stuff is solid: steps, heart rate, sleep, workouts. That part feels like classic Fitbit, and that’s honestly why I’d buy it. Where it gets a bit more annoying is everything tied to Google: the app design, the push towards subscriptions, and some features like YouTube Music controls that are more hassle than they’re worth.

One thing that surprised me is how light and unobtrusive it is. You really do forget it’s on your wrist, which is exactly what I want for sleep tracking and wearing it at work. Compared to a full smartwatch, you get far less distraction and way better battery life, but of course you also sacrifice a lot of apps and smart features. If you mainly care about health data and not running apps on your wrist, that trade-off makes sense.

Overall, my feeling is this: as a pure health and activity tracker, the Charge 6 is pretty solid and does what it says. As soon as you expect it to behave like a tiny Google-powered smartwatch with smooth Wallet, Maps and music control, you start to see the cracks. So it really depends what you expect from it when you buy it.

Price-wise, the Charge 6 sits in that slightly awkward middle zone. It’s more expensive than the random budget bands you see online, but cheaper than full smartwatches from Apple or Samsung. Some users feel it should be in the £60–80 range for what it offers, and I kind of get that. You’re paying partly for the Fitbit brand, the app ecosystem, and the health features like ECG alerts, not just the hardware.

The included 6 months of Fitbit Premium does add some value at the start. You get the Daily Readiness Score, deeper sleep breakdowns, and extra content. But after those 6 months, you need to decide if you’re willing to pay a subscription. Personally, I think the band is still useful without Premium: basic sleep score, steps, workouts, heart rate, and notifications are enough for most people. The extra stuff feels more like “nice to have” than essential.

Compared to cheaper copycat bands, what you mainly gain here is more reliable heart rate, better sleep tracking, and a more polished (even if slightly annoying) app. Also, health features like irregular rhythm notifications and AFib alerts are not something you usually get on the £30 bands. One Amazon reviewer even mentioned their husband got alerted to night-time AFib and ended up on proper medication because of it. That’s not a guarantee it will save everyone, but it does show there’s some real value in those alerts.

In short, I’d say the Charge 6 is good value if you actually care about health metrics and plan to use them. If you just want steps and the time, a cheaper band will do the job. If you want tons of apps, music storage, and a big screen, you’d be happier saving more and going for a proper smartwatch or a mid-range Garmin. The Charge 6 sits in the middle and makes the most sense for people who want strong tracking without diving fully into the smartwatch world.

Design-wise, the Charge 6 is very much a fitness band, not a fashion watch. It’s a small rectangular screen with a silicone strap, and that’s it. The Porcelain / Silver Aluminium version looks clean and neutral, kind of “disappears” on the wrist, which I like. It doesn’t scream for attention like some big round smartwatches. If you want something that looks like jewellery, this isn’t it, but as a daily tool it’s fine.

The screen is 1.04 inches, full colour and bright enough outdoors. It’s not huge, so if you’re used to big watch faces, it will feel narrow. But for glancing at steps, heart rate, or the time, it’s more than enough. Swiping through menus is straightforward, and the touch response is generally good. Sometimes there’s a slight delay when you swipe from a wet screen or with sweaty fingers, but nothing dramatic.

You can change the watch faces in the app, though the choice is a bit limited and some of them feel more like they were designed for kids. I ended up picking a simple one with big numbers and heart rate front and centre and left it there. There’s no rotating crown or buttons like a smartwatch, so you rely entirely on touch and a side haptic area to go back. Once you get used to the gestures, it’s pretty quick to move around.

Overall, the design is functional and discreet. It slides fine under a shirt cuff, doesn’t get caught on stuff, and doesn’t look ridiculous in the gym or at work. But it’s not going to impress anyone visually, and that’s fine. If you want a stylish accessory, look elsewhere. If you want a band that just blends into your day and does its job, this fits that role pretty well.

Fitbit advertises up to 7 days of battery, and like always, that’s a best-case scenario. In my real use, with 24/7 heart rate on, sleep tracking every night, a couple of GPS workouts during the week, and notifications on, I was getting around 4–5 days per charge. If I hammered the GPS with long runs and messed with the screen brightness, it dropped closer to 3–4 days. So yes, it can reach 7 days, but only if you keep things pretty minimal: few workouts, limited notifications, lower brightness.

Compared to a full smartwatch like a Wear OS watch or an Apple Watch, it’s still much better. With those, you’re often charging every day or every two days. With the Charge 6, I charged it twice a week and didn’t stress too much about it. I usually plugged it in while showering or working at my desk, and in 30–40 minutes, it gained a good chunk of battery. A full charge from near empty takes about an hour or a bit more, which is reasonable.

The charging cable is the usual proprietary Fitbit clip thing. It works, but you’ll want to avoid losing it since replacements aren’t as cheap as a generic USB-C cable. The magnet holds well enough that it doesn’t fall off if you bump the table, but it’s not super strong either. I’d have preferred something more standard, but that’s how most wearables are, so nothing surprising there.

Overall, I’d call the battery life good but not mind-blowing. It’s strong enough that you can actually use all the features without constantly worrying about running out of juice, but if you believed the full 7-day claim with heavy GPS and bright screen, you’ll probably feel a bit misled. For a slim tracker with colour screen and GPS, though, 4–5 days in real life is pretty decent.

The main thing I noticed after a few days is how light this thing is. At around 3 g for the body (plus the strap), you genuinely forget you’re wearing it. That’s important if you plan to use it for sleep tracking. I’ve tried bulkier smartwatches in bed and ended up ripping them off at 2 a.m. With the Charge 6, I just leave it on and it doesn’t bother me on the pillow or when I roll over.

The included silicone strap is standard Fitbit stuff: soft, slightly stretchy, and with enough holes to adjust. I wore it all day, including at the gym and in the shower, and didn’t get any skin irritation, but I’m not especially sensitive. If you tend to react to rubber straps, you might still want to swap it for a third-party band. The good news is the strap mechanism is simple, and there are loads of cheap replacement bands online if you don’t like the stock one.

One thing to flag: heart rate over tattoos can be an issue. One of the reviewers mentioned it, and I’ve seen the same with other optical sensors. If you have a solid black tattoo exactly where the sensor sits, it can struggle to read your heart rate. In that case, you’ll have to wear it on the other wrist or shift it a bit higher where there’s no ink. It’s not a Fitbit-specific problem, but worth knowing before you think the device is broken.

In day-to-day use, I had no problem wearing it 24/7: work, gym, shower, sleep. It’s water-resistant up to 50 m, so swimming or getting caught in the rain is fine, though I’d avoid hot tubs and salt water if you want it to last. The band doesn’t snag on clothes, and because it’s narrow, it doesn’t feel sweaty underneath like some big watches. Comfort-wise, it gets a clear thumbs up from me.

In terms of build, the Charge 6 feels light but not cheap. The aluminium case gives it a bit of sturdiness, and the screen has held up fine for me with no deep scratches yet, just the usual tiny marks you only see under direct light. It’s not a rugged outdoor watch, though, so if you work on building sites or do contact sports, I’d be a bit careful or add a screen protector.

Water resistance up to 50 m means showers, swimming pools, and rain are fine. One Amazon reviewer mentioned sea swimming probably killed their older Charge 5. I’m not surprised: saltwater is rough on seals and coatings. If you’re going to swim in the sea, I’d rinse it with fresh water after and not expect it to last forever. Also, hot water and steam (like saunas and hot tubs) are never a good idea for these devices, even if they’re technically water-resistant.

Long-term, the bigger question is software support, and that’s where things feel shaky. Google hasn’t exactly given clear guarantees, and the app has changed a lot, not always in a good way. Some long-time users feel the app is getting worse, more buggy, and more focused on Premium. So even if the hardware keeps working, you’re a bit at the mercy of updates that might break something or remove features. That’s the reality with connected devices now, but still annoying.

Overall durability in normal use (desk job, gym, occasional swim) seems fine. People are reporting multiple years from older Charges, and I’d expect similar here if you don’t abuse it. Just don’t treat it like a G-Shock or a hardcore Garmin: it’s a slim tracker, not a military watch. If you’re rough on your gear, you might want a chunkier device or at least a cheap screen protector and a spare strap.

On the tracking front, the Charge 6 does its main job well. Steps and all-day activity are consistent with what I’ve seen on other Fitbits and my phone. 24/7 heart rate is stable, and the live heart rate display during workouts is easy to read. I compared it a few times with a chest strap at the gym, and while it’s not perfect, it’s close enough for normal users. For casual running, walking, or gym sessions, it’s more than good enough.

Built-in GPS is a nice upgrade if you’re coming from an older band without it. You can head out without your phone and still get distance and pace. Lock-on time is decent, but not instant. Sometimes it takes 20–30 seconds to grab a signal. Accuracy is okay, not at the level of a dedicated running watch, but my routes weren’t wildly off. For someone training seriously for races, I’d say go Garmin or similar. For average users tracking a 5k or a long walk, it’s fine.

Sleep tracking is honestly one of the strong points. It breaks your night into light, deep, REM, and awake, and it matched pretty well with what I remembered. When I woke up feeling like I barely slept, the data usually showed lots of light sleep and short deep phases, which made sense. The smart wake alarm that tries to buzz you in a lighter sleep phase works decently, though not magically; sometimes it still catches you in the wrong moment, but overall I liked it.

The weak spot is the Fitbit app since Google took over. It works, but it feels more cluttered and less fun than older versions. There’s a clear push towards Premium and membership stuff, and some screens feel stripped down compared to what long-time users remember. Sync is mostly okay for me, but you do see people complaining about bugs and weird behaviour. Also, advanced stuff like ECG and some detailed stats only show properly after a manual sync, which can be confusing at first. Data is there, but the way it’s presented could be better.

On paper, the Fitbit Charge 6 is packed for such a small band. You get 24/7 heart rate tracking, SpO2 (oxygen saturation), ECG notifications for irregular rhythm, sleep tracking with stages, stress management score, and more than 40 exercise modes. It also has built-in GPS, which means you can go running or walking without your phone and still get a proper route map afterwards. That’s a big plus if you hate carrying your phone on runs.

There’s also the more “smartwatch” side: Google Wallet for payments, Google Maps for basic navigation prompts, and YouTube Music controls. In reality, these feel more like extras than core features. Wallet depends heavily on whether your bank supports it on wearables, and some banks just don’t. Maps and music controls also depend on a stable Bluetooth connection to your phone, and if that link is flaky, the experience quickly gets annoying.

The Premium membership is another piece of the puzzle. You get 6 months included, which unlocks things like the Daily Readiness Score, more detailed sleep insights, and guided workouts or mindfulness sessions. It’s nice to play with at the start, but you have to ask yourself if you’ll really pay for it long term. Personally, I find the free metrics (steps, heart rate, basic sleep, workouts) already enough; the rest is nice but not essential.

From a pure “what does it do for me daily” point of view, the Charge 6 gives you: reliable step counting, decent workout tracking with heart zones, proper sleep analysis, and simple notifications from your phone. The health alerts, like high/low heart rate or possible AFib, are a clear plus if you’re health-conscious or have concerns. The Google extras are more of a bonus that sometimes work well and sometimes feel half-baked. So I’d buy this mainly as a health tracker, not because of the Google branding.