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Fitbit Sense — Review & Specs | Pricepect | Pricepect

Home Smartwatches with ECGFitbit Sense

Fitbit Sense — image 1

Fitbit

Fitbit Sense

Expert Review Analysis

The Fitbit Sense is a health‑focused smartwatch featuring a 1.4" AMOLED display, built‑in GPS/GLONASS, and a suite of sensors like ECG, cEDA, SpO2 and skin‑temperature. It offers up to six days of battery life, swim‑proof design, and interchangeable bands, targeting users who prioritize wellness tracking.

✓ Best for: Health‑conscious adults who want detailed stress, heart and sleep monitoring; runners and hikers who need built‑in GPS without a phone; swimmers who want automatic lap counting; office workers seeking stress‑reduction tools and daily readiness insights.✗ Not ideal for: Users who need standalone cellular or Bluetooth calls, those requiring medically certified diagnostics, people who prefer a lighter smartwatch, or customers in regions where ECG and SpO2 are unavailable.

Pros

✓Accurate built-in GPS and GLONASS enables phone-free distance tracking for runners and hikers.
✓Comprehensive health sensors including ECG, cEDA stress monitor, SpO2 and skin temperature variation provide detailed wellness insights.
✓

Price History

Current

$144.99

Average

$264.67

Lowest

$144.99

Highest

$324.03

Good Deal — 45% below average

Price trend (90d):-2.7%

Best Seller Rank History

Now#1,935Best#1,935Worst#3,434 +1,475

Lower = better sales rank

Rating Trend

Rating4.0/ 5Reviews322

Specifications

Audio

Speaker Volume75 dB SPL @ 10 cm dB

MicrophoneMicrophone

Battery

Battery Life6 days minutes

Charging MethodMagnetic USB charger

Connectivity

Bluetooth VersionBluetooth LE

Wi-FiWi-Fi (deactivated)

NFCNFC

GPSBuilt-in GPS + GLONASS

Bluetooth Range30 ft ft

Design

Height12.3 mm mm

Width40.4 mm mm

Length40.4 mm mm

Weight30 g g

Band SizeSmall: 13.9–18 cm, Large: 18–22.1 cm

Display

Screen Size1.4 in mm

Resolution336 x 336 pixels

Display TypeAMOLED

Glass ProtectionCorning Gorilla Glass 3

General

BrandFitbit

ModelFB512BKBK-FRCJK

Operating Temperature-10°C to 45°C

Water Resistance50 meters m

WarrantyNo warranty in US

Sensors

Heart Rate SensorMulti-path optical

ECG SensorElectrical

SpO2 SensorRed/infrared

Skin Temperature SensorVariation sensor

Accelerometer3-axis

Storage

Storage Capacity4 GB GB

Music Storage2.5 GB GB

Health

ECG app availabilityFeature not available in all countries

SpO2 sensorProvides oxygen saturation readings, not for medical diagnosis

Durability

Water resistanceRated to 50 meters, suitable for swimming and lap counting

Dimensions & Weight

Height0.48425196801 inches

Width1.59055117948 inches

Depth1.59055117948 Inches

Weight0.0661386786 Pounds

Research Sources

store.google.com

mobilemob.com.au

bhphotovideo.com

consumerreports.org

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User Reviews

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4.0

(322 reviews)

$144.99

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FB512BKBK-FRCJK1.4 inches

Smartwatches with ECG

Long battery life of over six days reduces need for daily charging, even with active health monitoring.

✓Bright 1.4‑inch AMOLED display with Corning Gorilla Glass 3 offers clear visibility in various lighting conditions.

✓Swim‑proof design to 50 m with automatic lap counting makes it ideal for swimmers.

✓Easy magnetic charger and interchangeable small/large bands simplify setup and personalization.

Cons

✗Certain health features like ECG, SpO2 and skin‑temperature are region‑locked or not medically validated, limiting usefulness for some users.
✗Speaker and microphone for calls require a nearby phone, and Bluetooth call latency can be noticeable after updates.
✗The smartwatch is relatively heavy with the band (up to 45.9 g), which some users find uncomfortable during extended wear.
✗Wi‑Fi connectivity is deactivated out‑of‑the‑box, reducing options for faster data sync.
✗Frequent charging is needed when using power‑intensive sensors such as SpO2 throughout the day.

From Expert Reviews

Praised by Experts

✓Professional reviewers highlight the advanced ECG and AFib screening combined with a 6‑day battery as a strong health‑focused advantage.
✓Editors praise the high‑resolution AMOLED display and built‑in GPS for accurate outdoor activity tracking.
✓Consumer Reports notes strong step counting accuracy and reliable sleep tracking as standout features.

Criticized by Experts

✗Experts point out that the ECG and SpO2 functionalities are not available in all countries, limiting global appeal.
✗Reviewers mention that the smartwatch’s speaker/microphone calls are dependent on a paired phone and can feel delayed.
✗Some editors criticize the deactivated Wi‑Fi and the need for frequent charging when using advanced health sensors.

From User Reviews

Users Love

✓Everyday users appreciate the automatic swim lap counting and the convenience of the magnetic charger.
✓Customers like the inclusion of both small and large interchangeable bands for a comfortable fit.
✓Users report that the precise accelerometer, gyro and altimeter provide accurate movement and elevation data.
✓Many users enjoy the long battery life that lasts through a week of regular use.

Users Complain About

✗Users complain that Bluetooth calls do not work standalone and require the phone to be nearby.
✗Several customers note that the band size changed from older Versa models, making previous bands incompatible.
✗Some users are frustrated that region‑locked features like ECG are unavailable in their location.
✗Reviewers mention that the smartwatch feels heavier on the wrist compared with lighter competitors.

Expert Opinion

Professional reviewers and editors commend the Fitbit Sense for its robust health sensor suite—including ECG, cEDA stress monitoring, and SpO2—paired with a long‑lasting battery and a vivid AMOLED display. They note its strong step counting, sleep tracking, and built‑in GPS as valuable for active users, while calling out the regional limitations of certain features, the reliance on a phone for calls, and the deactivated Wi‑Fi as drawbacks.

What Users Say

Everyday users praise the swim‑proof capability, magnetic charger, and interchangeable bands, highlighting the accurate movement tracking and week‑long battery life. Common complaints revolve around the inability to make standalone Bluetooth calls, region‑locked health features, incompatibility with older Versa bands, and the perceived heaviness of the device.

Common Complaints

Bluetooth call dependency on a phone, region‑locked ECG/SpO2 features, incompatibility with older Versa band sizes, heavier feel on the wrist, and frequent charging when using power‑hungry sensors.

What People Are Saying

“I love the lap‑tracking swims”
4/5 ★Best BuyNov 2025

“The battery lasts me a full week even with daily workouts”
5/5 ★User reviewOct 2025

How It Compares

vs. Fitbit Versa 3

Advantages

✓Sense offers ECG and cEDA stress monitoring that Versa 3 lacks
✓Both have similar 6+ day battery life, but Sense adds more health sensors

Disadvantages

✗Versa 3 is lighter and may feel more comfortable for some users
✗Sense is heavier with the band and includes region‑locked features

Choose Sense for advanced health tracking; choose Versa 3 for a lighter, more basic fitness watch.

vs. Apple Watch Series

Advantages

✓Sense provides up to a week of battery life versus Apple Watch's ~18‑hour limit
✓Unique cEDA stress sensor is not available on Apple Watch

Disadvantages

✗Apple Watch offers a richer app ecosystem and optional cellular connectivity
✗Apple Watch has a brighter Retina display and more mature smartwatch OS

Pick Sense for longer battery and specialized health sensors; pick Apple Watch for broader app support and cellular features.

vs. Garmin Venu

Advantages

✓Sense includes ECG and skin‑temperature sensors absent on Garmin Venu
✓Both have swim‑proof designs, but Sense adds built‑in GLONASS for better location accuracy

Disadvantages

✗Garmin Venu provides multi‑band GPS with superior accuracy for endurance athletes
✗Garmin’s OS focuses on navigation and sport metrics, which some users may prefer

Opt for Sense if health monitoring and battery life are priorities; opt for Garmin Venu if you need top‑tier GPS and sport‑focused features.

Fitbit Sense vs Samsung Galaxy Watch 4 40mm

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