Wristband wearables have appear a prolonged way, and these times we expect them to offer GPS, heart fee monitoring, alarms and a selection of handset connectivity functions. The £129.99/$149.99 Fitbit Cost 4 has all of these, furthermore a combine of other functions, some of which Fitbit phone calls ‘apps’. You can pick to display or not display these wristband apps, which involve a contactless payment wallet referred to as Fitbit Pay out, on the device by generating picks in the Fitbit smartphone application (iOS or Android). Pay out £149.99/$169.95 for the Specific Version and you get a woven again wristband rather than a rubbery 1. I have been working with the Cost 4 for many months, and offer these observations as a comply with-up to Matthew Miller’s April overview.


The Fitbit Cost 4 (£129.99/$149.99) features heart-fee monitoring, constructed-in GPS, aim-dependent exercising modes, water resistance, snooze monitoring, notifications and on-band apps.

Visuals: Fitbit


The common wristband can be replaced with vibrant or woven solutions.

Graphic: Sandra Vogel / ZDNet

The over-all structure is acquainted to everyone who has a earlier Fitbit Cost device: an elongated touch screen a solitary aspect (touch) button on the left edge of the Cost 4 (if worn on the proper wrist) and a detachable wristband that is very easily replaced with vibrant solutions. The Cost 4 arrives with two wristbands and I found the modest 1 was good for me. All but the most significant of wrists need to be accommodated.

The gray OLED touchscreen is big and you navigate all-around it working with the aspect button and a combine of screen sweeps and faucets. It’s pretty uncomplicated to get applied to how issues do the job. Tapping on the clock encounter toggles as a result of metrics like ways, distance, and heart fee. A selection of faces can be established displaying unique picks of metrics, furthermore time and day, by way of the Fitbit smartphone application. Sweeping proper to left brings up several wristband apps that have been enabled in the smartphone application.

Standard action monitoring operates good. You can convey to the smartphone application your normal stride lengths for the two managing and walking, and it shares this with the Cost 4, which can then convert paces into distance. It’s not excellent, but I have constantly found Fitbit devices to be pretty precise when analyzed on calculated distances, and that stays the situation with the Cost 4. 

The Cost 4 will immediately detect when you are managing, biking, on a treadmill or walking, and it is water resistant to the extent that you can swim for up to fifty metres carrying it without having adverse result. If you might be severe about cross-instruction with these styles of pursuits, then you may possibly want a a lot more sophisticated device that can provide a bigger selection of metrics. But if you might be just searching to do a selected range of ways or protect a selected distance, then the Fitbit 4 operates well, such as issuing alerts when you reach your preset objectives every single working day.

With a heart fee check on-board, the Fitibit Cost 4 can do appealing issues like measure your resting heart fee, established action zones and report on these, and — new for this model — deliver a report of Active Zone Minutes. This is a calculation dependent on age and resting heart fee, and the idea is to reach a aim of 150 minutes a 7 days in your Active Zone. It’s fairly a intelligent idea for all those working with a Fitbit to burn up calories or drop bodyweight. Just ambling all-around is fewer handy in this regard than shifting a bit a lot quicker, and generating your heart do the job a bit more difficult. As your resting heart fee lowers, the Fitbit improvements its concentrate on minutes, so in theory there’s constantly a applicable aim to intention at. Complete reporting total with graphs is available in the Fitbit smartphone application.

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Of all these metrics I found the resting heart fee info specifically valuable. I have noticed from earlier Fitbit use how my heart fee fluctuates if I have a chilly or fever, and how it falls as I get fitter, growing as my fitness wanes. These metrics can assist persons track their progress together a fitness trajectory.

The snooze monitoring is also valuable. I like to hold an eye on the hrs I expend asleep, as well as monitoring my snooze good quality to make positive I’m not brief-shifting myself. The Fitbit application has some nicely presented graphics displaying over-all snooze hrs and intervals of restlessness. If you genuinely want to weigh in with the metrics, the Fitbit application presents you a snooze rating dependent on the good quality and period of snooze, with a score this kind of as ‘fair’ or ‘good’ for every single night time. 

As for the further functions, I didn’t hassle with the Spotify controls, Fitbit Pay out (a new characteristic with the Cost 4), the weather application, or notifications. My handset is the go-to location for this operation, but I can see how some people may locate them valuable. What I like a large amount is the silent, vibrating alarm, which is potent enough to wake me, but also refined to wake somebody else.


The Cost 4’s charge cable is rather brief, and fiddly to engage.

Graphic: Fitbit

The battery is rated to very last for seven times presented you are not working with GPS, in which situation it is really only great for 5 hrs. This mainly rendered the GPS unusable for me on prolonged weekend walks, even if I started with it entirely billed. That is a disgrace, as GPS is a big advertising stage for the Cost 4. I found the charge device to be a bit of a fiddly in shape, and I experienced to double-examine that it was in location adequately. Also, its cable is fairly brief, which intended my standard desktop charge station was just a very little uncomfortable to use. Extended time period this would most likely be fairly an situation.

In general, the Fitbit Cost 4 has some outstanding functions and is a great stage up from the Cost 3, whilst the Fitbit application shows a large amount of fairly elaborate info in an available way. Keen sporting activities persons will want a lengthier-long lasting battery for GPS use and a lot more granular metrics, but as a fitness tracker for general wellbeing the Cost 4 does extremely well.

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