The Fitbit Sense replaces the Ionic on the peak finish of the corporate’s circle of relatives of health and fitness smart-watches and exercise trackers. On peak of each Fitbit health metric and a integrated GPS, it measures your tension ranges, pores and skin temperature, blood oxygen, electrodermal exercise, ECG, and heart-rate diversifications. 

Replace, June 2021: Fitbit decreased the retail worth by means of £20/$30.

Fitbit calls the Sense an “complex fitness smartwatch”, and it’s on fitness that it beats different Fitbits such because the Versa 3, which introduced on the similar time however focuses extra on core health options. Learn our Fitbit Versa 3 overview.

It is a nice smartwatch, solely held again by means of what I believe a deficient wrist strap and the truth that a couple of too lots of the easiest fitness monitoring options are reserved for paying Fitbit Top rate subscribers.

Fitbit is continuous so as to add new options, corresponding to the facility to take hands-free calls by means of the watch, which contains each a microphone and audio system, and including Google Assistant along the Amazon Alexa voice assistant.

Design & construct

The Fitbit Sense is a handsome watch with a vibrant display screen and a responsive person interface.

The primary frame is manufactured from aluminium with a sophisticated (medical-grade) stainless-steel end. This fine quality stainless-steel ring is needed to get one of the most extra complex sensor readings. It’s additionally tougher; the medical-grade refers to its corrosion resistance.

It options a big 1.58in OLED show with a solution of 336 x 336, which is vibrant, and simple to learn even in direct daylight.

The bodily button discovered at the Versa 2 has been changed with a brand new haptic sensor at the left edge – so there is no bodily button to push in, however as an alternative a touch-sensitive space that vibrates a bit of to can help you know your contact has been recognised.

A regular button would had been more straightforward, however in point of fact you’ll get anyplace you want with a swipe.

Fitbit Sense Versa 3 strap band

Additionally new is the incorporated swappable strap known as the Infinity Band, and it takes a bit of being used to. As an alternative of a vintage watch strap, there’s a peg you push thru the most productive hollow on your have compatibility, and then you definately shut it thru a loop.

That is my greatest gripe with the Sense: the band that it ships with simply is not as protected because the previous watch-buckle. I had it fall off my wrist inside of 24 hours, and whilst you believe it is utilized in bodily exercises, that’s not nice sufficient. I’d severely counsel you buy some of the accent straps (the Recreation one is superb) that characteristic extra powerful buckles.

No less than Fitbit has made swapping the bands a lot, a lot more straightforward with the Sense. Converting the strap at the previous Versa and Versa 2 was once as fiddly as fiddly can get. This time, you simply must push a tab forwards and gently slide the strap off, after which click on a brand new one in.

Fitbit Sense smartwatch models

As for colors, the Sense is to be had in Graphite Stainless Metal with a Carbon band, or Comfortable Gold Stainless Metal and Lunar White band.

Well being monitoring

The Ionic, just like the Fitbit Surge that it changed, was once advertised as a sports activities smartwatch. Sports activities was once thought to be the head of the health tracker, however with the Sense Fitbit has pivoted clear of sports activities to extra of a focal point on bodily and psychological fitness, in addition to together with the entire anticipated health options.

Pressure control

Clinical practitioners are increasingly more caution that tension will also be as unhealthy as bodily sickness, contributing to hypertension, coronary heart illness, weight problems and diabetes. Fitbit has new gear within the Sense that may lend a hand establish tension, and subsequently can doubtlessly can help you recognise and organize it.

Fitbit Stress Management

Fitbit will give you a Pressure Control Ranking that calculates how your frame is responding to worry in keeping with your coronary heart charge, sleep, and exercise point information.

It is helped by means of a brand new Electrodermal Process (EDA) sensor that measures adjustments within the resistance of the outside to a small, undetectable electrical present in accordance with sweat secretion. EDA measures the depth of emotion, no longer its state, so an build up in conductance will also be brought about by means of each certain and detrimental emotional states. You’ll log your temper (wired, calm, and so on) after the EDA scan.

Customers can then see a graph in their EDA responses within the Fitbit app, which tracks tendencies through the years.

Many ways of managing tension come with expanding bodily exercise and mindfulness – to which finish the Fitbit app features a guided meditation characteristic. After your consultation is over, activates within the cell app can help you replicate on how you are feeling and spot if those have a favorable impact for your tension ranges.

You’ll set a weekly mindfulness objective, monitor day-to-day aware mins and days, and spot tendencies. The rating levels from 1-100, with upper rankings indicating your frame is appearing fewer bodily indicators of tension. It is paired with suggestions to raised organize tension, corresponding to respiring workouts.

Fitbit Sense EDA scan

Fitbit Top rate participants gets an in depth breakdown on how the rating is calculated, which is composed of over 10 biometric inputs, together with exertion stability (affect of exercise), responsiveness (coronary heart charge, coronary heart charge variability and electrodermal exercise from the EDA Scan app), and sleep patterns (sleep high quality). This might be a not unusual theme as we cross on, with one of the most easiest monitoring options within the Sense held again for subscribers.

Pores and skin temperature

There’s additionally a brand new pores and skin temperature sensor, which can be utilized to suggest the onset of a fever or sickness (are you able to call to mind any large ones going round?), in addition to linking up with Fitbit’s present fitness monitoring for menstrual stages. That is performed at evening when the Sense will measure your pores and skin temperature variation to look tendencies, so it does not show one-off readings.

Fitbit Sense app screens

It takes the Sense 3 nights to calculate your baseline pores and skin temperature. Then you definitely see nightly moderate variation in comparison to that baseline temperature at the Temperature tile at the Nowadays display screen within the Fitbit app.

Different Fitbit smartwatches – Ionic or any Versa fashions – too can monitor your pores and skin temperature, however solely the Sense presentations the information within the app with out a Fitbit Top rate subscription.

In case your temperature is spiking or shedding in comparison to commonplace, this can be a signal of sickness. Few people use a thermometer on a daily basis, so it’s going to be fascinating to look if this works – even though I will must look forward to an sickness to document again on its worthiness.

Fitbit Sense sp02

SpO2, ECG & extra

Like different Fitbit smartwatches, the Sense can measure your moderate SpO2 ranges – the quantity of oxygen on your blood. This knowledge can be utilized to locate your respiring charge along how neatly blood is being transported all through the frame. Low ranges of oxygen may end up in critical signs corresponding to hypoxemia.

Word that the Sense solely tracks your oxygen saturation ranges whilst you sleep, not like the Apple Watch 6 or Withings ScanWatch, either one of which is able to take a blood O2 studying in simply 15 seconds at any time of day. Take a look at our complete comparability between Fitbit and Apple Wait for extra on how the 2 manufacturers stack up.

One complication is that the SpO2 clock face should be set as your number one clock face if you find yourself drowsing to ensure that it to trace your information, which does not make the provider as computerized as we expect it might be. On the other hand, Fitbit has now corrected this, even if for Top rate subscribers solely.

A sensor within the Sense’s outer chrome steel ring detects {the electrical} indicators produced by means of your coronary heart every time it beats, and a brand new electrocardiogram (ECG) app – licensed america FDA and EU CE – can assess your coronary heart for atrial traumatic inflammation (AFib) heart-rhythm irregularity that may build up the chance of getting a stroke, or commonplace, uniform sinus rhythm.

To take an ECG studying, you put your index finger and thumb at the reverse corners of the steel body for 30 seconds.

Fitbit Sense ECG

There are 3 conceivable effects: Atrial traumatic inflammation (an abnormal coronary heart rhythm, so that you must communicate for your physician for additional checks); Standard sinus rhythm; and Inconclusive (in case your coronary heart charge is underneath 50 bpm or above 120 bpm, the ECG app will not be able to get admission to your coronary heart rhythm, so easiest to not take an ECG studying immediately after having very good cardio health).

An stepped forward heart-rate sensor is helping to force any other new characteristic: heart-rate notifications (unique to the Sense) when it detects that your coronary heart charge is above or underneath your commonplace threshold.  This will also be helpful to locate bradycardia (a coronary heart charge this is too sluggish) or tachycardia (a coronary heart charge this is too speedy).

Fitbit Top rate subscribers can see their heart-rate variation (HRV), the time between every heartbeat. Once more, it will point out the onset of sickness, in addition to fatigue and tension.

Fitbit’s new Well being Metrics dashboard is going into extra collective element on variation through the years (7- and 30-day tendencies), monitoring respiring charge (moderate breaths according to minute), resting coronary heart charge, coronary heart charge variability (variation of time between every heartbeat), SpO2 ranges (quantity of oxygen on your blood) and pores and skin temperature variation.

The corporate is raring to indicate that customers mustn’t regard this knowledge as scientific reality, and must touch their physician for pro recommendation. 

At the start for Top rate subscribers solely, the Well being Metrics dashboard has now been opened as much as all customers, no less than for the 7-day pattern view. The 30-day pattern view remains to be for Top rate solely.

Learn our complete characteristic to be informed extra about the entire Fitbit rankings and measurements.

In america the corporate has introduced a brand new provider known as Fitbit Top rate + Well being Training. This provides subscribers digital one-on-one get admission to to an authorized fitness skilled and customized plan the use of your Fitbit information, by means of the Fitbit app. The theory is to provide you with limitless, appointment-free, actionable steerage that can assist you succeed in objectives corresponding to weight reduction, tension relief, and even managing a protracted situation.

Health options

As I have mentioned, past the brand new health-tracking tech the Sense additionally has an outstanding array of health options – certainly no different Fitbit has greater than the Sense.

In fact, it tracks actions corresponding to Steps, Distance, Flooring Climbed, Lively Mins and Energy Burned.

Fitbit Sense Core Stats

The Lively Mins metric has been stepped forward with the more recent Lively Zone Mins (AZM) metric, and the Sense buzzes whilst you input a brand new Middle-Fee Zone: Fats Burn, Aerobic, or Top. This will give you quick understand that you’ve reached a goal zone, and whether or not you want to push more difficult on your exercise or pull again. AZM was once first noticed at the Fitbit Rate 4, and has now been rolled out on maximum Fitbits, even the entry-level Fitbit Encourage 2.

The Sense too can provide you with real-time stats for over 20 workout modes all through your exercises. Those will also be set manually, or Fitbit’s SmartTrack tech can mechanically recognise and report workouts corresponding to working, biking, swimming, treadmill, weights, yoga, and circuit coaching.

Fitbit Sense Activity

The Sense has GPS integrated, so that you don’t wish to lug your telephone round with you on a run or motorcycle journey. It additionally lets in you, after out of doors workout, to test your Exercise Depth Map within the Fitbit app to look your coronary heart charge zones all through your mapped course, plus distance and tempo by means of kilometre or mile.

The watch additionally features a 6-axis gyroscope to trace strokes and laps whilst swimming. In contrast, the Versa 3 and maximum different Fitbits do not come with gyroscope however as an alternative calculate laps for swimming in keeping with distance.

Fitbit Sense Sleep

Sleep monitoring

Like the entire newest Fitbits, the Sense gives complex sleep monitoring, appearing the sunshine, REM and deep sleep phases and scoring you at the high quality of your sleep in keeping with your drowsing coronary heart charge, time spent unsleeping, and time in Sleep Levels.

Fitbit remains to be the transparent winner on sleep dimension (period and high quality) in its struggle with the Apple Watch, which is stymied by means of its a lot weaker battery lifestyles.

You’ll additionally get a drowsing coronary heart charge dimension, however that is but any other characteristic stored again for Fitbit Top rate subscribers solely.

Fitbit Sense Battery

Battery and charging

Fitbit claims the Sense has a battery lifetime of 6+ days, and I were given just about seven days on my first rate, even if that was once with out the use of the GPS or At all times-On Show serve as.

In fact, the battery lifestyles is dependent upon your utilization – the use of the GPS will burn during the battery sooner than with out. You’ll test the remainder battery lifestyles by means of swiping proper or by means of the Fitbit app.

Fitbit Sense charger

The Sense includes a new charger sort, which connects magnetically to the again of the Sense. I’d was hoping it might attach any manner around, however it suits in only one alignment. Whilst I really like the truth that it’s smaller than the chunky Versa charger, the truth that it lies awkwardly whilst charging isn’t so nice.

It takes about two hours to completely rate from 0, even though the corporate says that it takes simply 12 mins of charging to provide you with an afternoon’s battery lifestyles the use of a brand new Rapid Charging characteristic.

Instrument & apps

Whilst the Fitbit smartwatches aren’t any fit for Apple or Samsung in the case of working a variety of apps, they do no less than take care of notifications neatly. Signals for calls, texts and calendar occasions are supported, in conjunction with apps corresponding to WhatsApp, Gmail, and Fb.

Additionally at hand are silent alarms that buzz for your wrist, in idea with out waking your mattress spouse – even if if used with a steel strap I will be able to ascertain that the thrill will also be audible to others. Sensible Alarm is a surroundings that permits you to get up at the most productive time all through your sleep cycle (all through gentle sleep), as much as part an hour previous however no later than the time you place.

In relation to apps you get the most obvious – timers, climate, and a calendar, but in addition a meditation app and Fitbit Pay for contactless bills.

Spotify, Pandora and Deezer are there for tune keep watch over, and you’ll additionally obtain apps for services and products corresponding to Uber and airways, in conjunction with different health and game apps. There are nonetheless extra apps on an Apple Watch, however the Sense will quilt lots of the necessities.

The two.5GB of tune garage could be nice if you must use it with Apple Track or Spotify. Are you aware someone who makes use of Deezer or Pandora?

That mentioned, the audio controls do paintings (unofficially) with Apple Track and Audible, as an example.

The similar is going for Fitbit Pay, which has restricted financial institution improve in the United Kingdom, even if extra if america.

Fitbit Sense phone calls on wrist

Telephone calls from the wrist

Sense customers too can take hands-free Bluetooth calls by means of the integrated mic and audio system, and ship incoming calls to voicemail and keep watch over quantity with out attaining for a telephone.

Telephone calls at the Fitbit Sense paintings in point of fact neatly, so long as you are not status in a gale or close to a pneumatic drill, with audio high quality lovely nice each tactics, and the controls are simple to make use of.

Android customers too can reply to textual content messages with voice-to-text instructions – a characteristic unfortunately no longer to be had to iPhone customers.

Those options additionally paintings at the Fitbit Versa 3.

Fitbit Sense Alexa voice assistant

Voice assistants

The Fitbit Sense additionally helps Amazon’s Alexa, with Google Assistant out now in america, UK, Canada, India, Australia, New Zealand and a few different English-speaking nations.

With Google within the procedure of shopping for Fitbit it’s an evident addition, as are the Android-only options like sending fast replies and voice replies proper out of your wrist when your telephone is within reach.

Fitbit has now added the potential to obtain audible replies from Alexa by means of the Sense’s little speaker.

Value and availability

The Sense prices £279/$299/AU$449/CA$399. That makes it the most costly Fitbit by means of a way – even the brand new Versa 3 is considerably much less at £199/$229. Take a look at our Very best Fitbit information to look which different fashions we advise, or in finding the newest Fitbit offers if you wish to save a bit of.

Nonetheless, it is rather conventional pricing for a high-end smartwatch, and remains to be not up to the newest Apple Watch or Samsung Galaxy Watch.

Fitbit Sense screens display

If you wish to get an identical fitness monitoring for much less – at the price of get admission to to lots of the wise options – it is price taking into account the Withings ScanWatch, which gives much more complete fitness options in a vintage analogue watch design.

Differently, take a look at our ratings of the most productive smartwatches and easiest health trackers to look what else is in the market.

As you’ll be expecting, there may be additionally a spread of straps and bands to head with the Sense. Accent straps come with woven and knit bands, silicone sports activities bands, and Horween leather-based bands. There’s even a spread of Pendleton bands constructed from recycled plastic fibres.

And as I have already discussed, to get essentially the most out of the Fitbit Sense you’ll be able to in point of fact want a Fitbit Top rate subscription – for higher or worse. In case you are new to Top rate you’ll be able to get six months unfastened with the Sense, however in a different way it’s going to price you £7.99/$9.99 per 30 days.

We would favor Fitbit confirmed all its fitness metrics to all Sense customers relatively than limiting some to Top rate subscribers, who would nonetheless get unique options in relation to further onscreen exercises and meditation classes.

Fitbit Sense Heart Rate


The Sense provides numerous new fitness options on the top-end of the Fitbit vary. It’s good to name it the hypochondriac’s smartwatch, it’s so filled with caution indicators, however there’s so much right here that can lend a hand point out critical fitness issues that you’re going to have the danger to give a boost to.

Mindfulness would possibly appear a bit of kooky to a few and a priority for the ones with an excessive amount of time on their arms, however there is not any denying that tension can impact us all, and managing it’s going to temporarily convey no longer simply psychological however long-term bodily fitness advantages.

I do surprise how steadily you will want to test your EDA or ECG in case you are no longer affected by an issue. 

If health is all you need an activity-tracking smartwatch for, then the inexpensive Fitbit Versa 3 gives the entirety you’ll get in that recognize with the Sense.

For all-round bodily and psychological fitness monitoring, the Sense is the Fitbit with all of it.