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KingAcc Fitbit Charge 2 Charger, Replacement USB Charging Cable Cord Charger Cradle Dock Adapter for Fitbit Charge 2, Fitness Tracker Wristband Smart Watch (3.3Foot/1meter, 1-Pack)

£99.995£199.99Clearance
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Well, other than sleep data not appearing on the watch until after you sync with your phone. You can’t just look to your wrist after you wake up, as you might with the Garmin Venu 3’s Morning Report feature. This is likely down to the phone app doing some of the data processing legwork. Essentially, the Google Maps and YouTube Music apps for the Charge 6 are doing nothing more than mirroring the phone's app, giving you morsels of information and controls. Which, for someone who doesn't want a big smartwatch, is perfect.

When you're sleeping, the Charge 6 monitors your Sp02, or blood oxygen level, along with your skin temperature and the number of breaths you take per minute. If you loosen the band to help the GPS out, you’re likely to see heart rate accuracy take a significant hit. And even before doing so, the Fitbit Charge 6 doesn’t have HR reliability that’s going to trouble the Apple Watch or a decent Garmin like the Forerunner 265. This is a highly useful feature, and Fitbit expanded it out a while ago with passive heart rate alerts. It’s not an ECG, but you do get alerts if the Charge 6 notices anything odd. You’ll likely only notice this if you don’t maintain a connection with your phone, as the Fitbit Charge 6 will leech location data from your phone if it can. But if you’re going to just do that, you might as well consider dropping down to the perfectly charming step-down Fitbit Inspire 3.

The Fitbit Charge 6 leaves a little to be desired

Navigating the watch and its apps is done through a series of taps and swipes on the touch screen and using the side button. I found using apps like YouTube Music to be a little cumbersome due to the size of the display, limiting the number of buttons and controls that can be shown at any given time.

In the gym we found the Fitbit Charge 6’s monitoring performed okay at times, but could be slow to react to the additional exertion of a set. And in classic so-so heart rate accuracy fashion, the band tends to mess up quite badly in the first 5-10 minutes of a run before usually finding its feet, at least in consistent runs rather than interval sets. You’ll see its stamina drop significantly if you use the always-on screen mode, which makes the Charge 6 a better watch as the time is displayed all day. But the beauty of this design is that you can wear the Charge with a normal watch without looking too silly. There are few wearables that compare directly to the Fitbit Charge 6. It’s a petite band, not a watch. But where that style is typically home to simple and feature-light watches, this one has a bunch of advanced elements seen in the Fitbit Sense 2. All of this is without significantly loosening the strap – and if you do this, the effect is going to vary depending on the shape and composition of your wrist. Either way, it’s not good news for the Fitbit Charge 6’s fitness cred. A Fitbit Charge 6 weighs 37g according to some spec run-downs, although our scales say it’s just 30g. While that’s fractionally heavier than the Charge 5’s 28g, this remains an ultra-light wearable that you can easily keep on 24/7. I did find that its rear left a notable red mark on my wrist on one occasion, but that was once over weeks of use, and was likely the result of over-tightening the strap.It does have one special new feature for the gym, though: the Fitbit Charge 6 can broadcast its heart rate data to gym equipment. This strap is your classic under-and-over silicone affair, similar to the default Apple Watch Series 9 sports band. If you don’t like it, you’ll find loads of replacements online, one of the benefits of buying a Fitbit instead of some cheaper no-name alternative.

The bottom of the Charge 6 is where you'll find the heart rate sensor and the connectors for the included charger.Our experience of using the watch ended up feeling quite incomplete, though, because of a problem highlighted by some in the Fitbit Charge 5. The Charge 6 also has an EDA, or electrodermal activity sensor, which looks for changes in sweat production as an indicator of stress or other heightened states. A lot of fuss was made over the EDA sensor at launch, but it’s generally not hugely useful for most people, particularly in the implementation here. You take around 30 seconds out of your day, with finger and thumb on the side of the watch, to see if something might be up with your heart. It failed about 50% of the time in my tests, but only because of an unusually low resting heart rate. And the experience is actually pretty neat, with a graph that shows what the watch is ‘seeing’ in real time. What the Fitbit Charge 6 alerts you about during exercise by default is different to the sports watch norm too. You’ll feel a little vibration buzz when you go from one heart rate zone to another. This can be just a handy little reminder of how hard you’re working in the early stages of a workout, or a more meaningful alert if you’re aiming for a currently trendy ‘zone 2’ low-exertion session. The Fitbit Charge 6 also gets Google Maps support, just like the Versa 4 and Sense 2. Manage your expectations, though – this doesn’t mean maps on your wrist. Instead the watch can relay instructions from a Google Maps session taking place on your phone. Still, it’s a neat, potentially useful feature.

An EDA asks you to sit still for three minutes, with your finger and thumb on the watch surround. The act of doing this is obviously going to affect your stress level, though, making it of limited use. Plus, it’s just not something most people are likely to do regularly. Is Premium worth it? You can decide for yourself, as the Fitbit Charge 6 comes with a 6-month free trial, or read our Fitbit Premium review and our guide to the best fitness apps.

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