1. Home Page
    2. /
  2. Sports Outdoor & Fitness
    3. /
  3. Fitness & Exercise
    4. /
  4. Fitness Trackers

Delivery

Delivery time may vary depending on store and country. To learn more about Shipping Policy

Price Range

GBP
-

Buy Fitness Trackers Online in UK

Sort by
|
WHOOP 5.0/MG Activity Tracker - 12 Month Membership - Health and Fitness Wearable 24/7 Activity and Sleep Tracker, Personalized Coaching, Menstrual Cycle Insights 14+ Days Battery Life
US Store
WHOOP

WHOOP 5.0/MG Activity Tracker - 12 Month Membership - Health and Fitness Wearable ...
4

4k+ bought

GBP 355

SAMSUNG Galaxy FIT 3 [2024] 1.6" AMOLED Display | 14 Days Battery Life | 100+ Watchfaces | 100+ Exercise Modes | International Model - Gray
US Store
Samsung

SAMSUNG Galaxy FIT 3 [2024] 1.6" AMOLED Display | 14 Days Battery Life | 100+ ...
4.4

2k+ bought

GBP 47

Upright Magnetic Necklace Necklace Only for GO S and GO 2 Posture Trainer
US Store
Upright GO

Upright Magnetic Necklace Necklace Only for GO S and GO 2 Posture Trainer
4.2

1k+ bought

GBP 29

45% OFF
Smart Watch Health Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure Sleep Monitor, 115 Sports Modes, Step Calorie Counter Pedometer IP68 Waterproof for Android and iPhone Women Men
US Store
Mindrose

Smart Watch Health Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood ...
4.4

1k+ bought

GBP 40 73

7% OFF
Upright GO 2 Premium | Posture Trainer & Tracker for Women & Men with Smart App
US Store
Upright GO

Upright GO 2 Premium | Posture Trainer & Tracker for Women & Men with Smart App
3.8

1k+ bought

GBP 86 92

9% OFF
FITVII Health & Fitness Tracker Answer/Make Calls, Smart Watch with 24/7 Heart Rate and Blood Pressure, Sleep Tracking, Blood Oxygen Monitor, 120+ Sport Modes Activity Tracker for Women Men
US Store
FITVII

FITVII Health & Fitness Tracker Answer/Make Calls, Smart Watch with 24/7 Heart Rate ...
4

1k+ bought

GBP 48 53

SAMSUNG Galaxy FIT 3 [2025, 40MM] 1.6" AMOLED Display | IP68 Water Resistant | 14 Days Battery Life | 100+ Watchfaces | 100+ Exercise Modes | International Model Fast Charger Bundle, Black
US Store
Samsung

SAMSUNG Galaxy FIT 3 [2025, 40MM] 1.6" AMOLED Display | IP68 Water Resistant | 14 ...
4.5

1k+ bought

GBP 49

Fitbit Inspire 3 Health & Fitness Activity Tracker Black with Workout Intensity, Sleep Tracking, Heart Rate, S & L Bands, 3.3foot Charging Cable, Wall Adapter, Screen Protectors & PremGear Cloth
US Store
Fitbit

Fitbit Inspire 3 Health & Fitness Activity Tracker Black with Workout Intensity, ...
4.3

700+ bought

GBP 97

Mindrose Fitness Tracker with Heart Rate Blood Oxygen Blood Pressure Sleep Monitor Step Calorie Counter Pedometer
US Store
Mindrose

Mindrose Fitness Tracker with Heart Rate Blood Oxygen Blood Pressure Sleep Monitor ...
4.2

500+ bought

GBP 73

9% OFF
Zeacool Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure Sleep Monitor, Activity Trackers 5 ATM Waterproof,Step Calorie Counter Pedometer Health Smart Watch for Women Men
US Store
Zeacool

Zeacool Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure Sleep ...
3.9

500+ bought

GBP 30 33

2026 Smart Ring Health Tracker for Men Women, Sleep Stress Exercise Health Monitoring, IP68 Waterproof, Long Battery Life, No Subscription, iOS Android Compatible Rose Gold, 9
US Store
prxxhri

2026 Smart Ring Health Tracker for Men Women, Sleep Stress Exercise Health ...
3.8

500+ bought

GBP 102

7% OFF
Google Fitbit Inspire 3 - Morning Glow/Black - Small and Large Bands | Stress management, sleep tracking, 24/7 heart rate, 3-month Google Health Premium membership included, small and large bands
US Store
Fitbit

Google Fitbit Inspire 3 - Morning Glow/Black - Small and Large Bands | Stress ...
4.2

500+ bought

GBP 95 102

Fitbit Inspire 3 Health & Fitness Tracker Bundle - with Stress Management, Workout Intensity, Sleep Tracking, 24/7 Heart + 2 Silicone Bands, 2 Screen Protectors, Cleaning Cloth & Fast Charger
US Store
Fitbit

Fitbit Inspire 3 Health & Fitness Tracker Bundle - with Stress Management, Workout ...
4.2

500+ bought

GBP 122

XIAOMI Mi Smart Band 10 2025 Global Version - 1.72" AMOLED Display | 21 Days Battery Life | Touchscreen, Multi-Sport Tracker, Activity Tracker, Heart Rate Monitor | BT5.4 - Glacier Silver
US Store
XIAOMI

XIAOMI Mi Smart Band 10 2025 Global Version - 1.72" AMOLED Display | 21 Days ...
4.4

500+ bought

GBP 53

Fitness Tracker, Smart Watches for Women Men with 24/7 Heart Rate/Blood Pressure/Blood Oxygen Monitor, Sleep Tracker, Calories&Step Counter, IP68 Waterproof Health Activity Trackers for Android&iPhone
US Store
RLQA

Fitness Tracker, Smart Watches for Women Men with 24/7 Heart Rate/Blood ...
4.4

500+ bought

GBP 44

Amazfit Band 7 Activity Fitness Tracker for Men Women, 18-Day Battery Life, Alexa Built-in, 1.47AMOLED Display, 24H Heart Rate & SPO2 Monitoring, 120 Sports Modes, 5 ATM Water Resistant, Black
US Store
Amazfit

Amazfit Band 7 Activity Fitness Tracker for Men Women, 18-Day Battery Life, Alexa ...
3.9

500+ bought

GBP 50

Garmin Venu 4, 41mm, Advanced Health and Fitness GPS Smartwatch, Bright and Colorful Display, Built-in Flashlight, 10 Days of Battery Life, Lunar Gold with Bone Silicone Band
US Store
Garmin

Garmin Venu 4, 41mm, Advanced Health and Fitness GPS Smartwatch, Bright and ...
4.6

500+ bought

GBP 541

Pavlok 3 Sports Black App-Controlled Silent Alarm & Habit Trainer Wearable Chime/Vibration/Adjustable Zap Includes Plus Lifetime Access Steps & Sleep Tracking
US Store
Pavlok

Pavlok 3 Sports Black App-Controlled Silent Alarm & Habit Trainer Wearable ...
3.6

500+ bought

GBP 180

Fitness Tracker with Step Counter/Calories/Stopwatch, Activity Tracker, Health Tracker with Heart Rate Monitor, Sleep Tracker,1.10AMOLED Touch Color Screen, Pedometer Watch for Women Men
US Store
ST-CARE

Fitness Tracker with Step Counter/Calories/Stopwatch, Activity Tracker, Health ...
4.1

500+ bought

GBP 33

30% OFF
Smart Bracelet for Men Women, Health Activity Fitness Trackers, 24H Sleep Tracker, 24/7 Continuous Heart Rate/Blood Pressure/HRV/Stress Monitor, 170+ Sports Modes Smart Wristband with Free APP 2 Bands
US Store
SOUYIE

Smart Bracelet for Men Women, Health Activity Fitness Trackers, 24H Sleep Tracker, ...
4.1

400+ bought

GBP 92 131

OnePlus Watch 3 Obsidian Titanium, 32GB, 120-Hour Battery,Health & Fitness Tracking,Sapphire Crystal Design,Titanium Bezel, Dual-Engine,Wear OS by Google,Supports Play Store & Apps,Google Play Store
US Store
OnePlus

OnePlus Watch 3 Obsidian Titanium, 32GB, 120-Hour Battery,Health & Fitness ...
4.4

400+ bought

GBP 628

13% OFF
Smart Bracelet for Men Women,24/7 Heart Rate Monitor, Sleep Tracking, 120+ Sport Modes, Built-in GPS, IP68 Waterproof, 30-Day Battery Life, Includes 2 Replacement BandsBlack
US Store
ganopterygon

Smart Bracelet for Men Women,24/7 Heart Rate Monitor, Sleep Tracking, 120+ Sport ...
3.2

400+ bought

GBP 21 24

Smart Watch Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure Monitor Sleep Tracker 120 Sports Modes Activity Trackers Step Calorie Counter IP68 Waterproof for Andriod iPhone Women Men
US Store
Bestinn

Smart Watch Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure ...
5

400+ bought

GBP 92

Smart Watch Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure Monitor Sleep Tracker 120 Sports Modes Activity Trackers Step Calorie Counter IP68 Waterproof for Andriod iPhone Women Men
US Store
Bestinn

Smart Watch Fitness Tracker with 24/7 Heart Rate, Blood Oxygen Blood Pressure ...
4

400+ bought

GBP 92

Fitness Trackers, No Bluetooth No APP/Phone Needed, 1.8" Fitness Watch for Men Women with Pedometer Heart Rate/Blood Oxygen/Sleep Monitor 100 Sports, Steps Counter Walking Running Waterproof
US Store
Cloudpoem

Fitness Trackers, No Bluetooth No APP/Phone Needed, 1.8" Fitness Watch for Men ...
4.2

400+ bought

GBP 44

10% OFF
Vigor 3 Kids Fitness Tracker Watch, AMOLED Screen for Girls Ages 5-15 | No Phone No App Required, 3ATM Waterproof, Pedometer, Heart Rate and Sleep Monitor, Vibrating Alarm, 10 Sport Modes, Reminder
US Store
BIGGERFIVE

Vigor 3 Kids Fitness Tracker Watch, AMOLED Screen for Girls Ages 5-15 | No Phone No ...
4.1

400+ bought

GBP 36 40

15% OFF
Fitness Tracker,Smart Watch with 24/7 Heart Rate Blood Oxygen Sleep Monitor,1.47" HD Touchsreen with Step & Calorie Counter 100+ Sport Modes Health Activity Trackers for Men and Women Black
US Store
VMQIPNS

Fitness Tracker,Smart Watch with 24/7 Heart Rate Blood Oxygen Sleep Monitor,1.47" ...
4.4

400+ bought

GBP 29 34

Amazfit Band 7 Activity Fitness Tracker for Men Women, 18-Day Battery Life, Alexa Built-in, 1.47AMOLED Display, 24H Heart Rate & SPO2 Monitoring, 120 Sports Modes, 5 ATM Water Resistant, Beige
US Store
Amazfit

Amazfit Band 7 Activity Fitness Tracker for Men Women, 18-Day Battery Life, Alexa ...
3.9

400+ bought

GBP 50

Choiknbo Fitness Tracker Watch with 24/7 Heart Rate, Blood Oxygen, Sleep Monitor, Activity Trackers with Step Counter Calorie Pedometer Watch for Women Men, IP68 Waterproof
US Store
Choiknbo

Choiknbo Fitness Tracker Watch with 24/7 Heart Rate, Blood Oxygen, Sleep Monitor, ...
4.1

300+ bought

GBP 27

Fitness Tracker with Heart Rate/Blood Oxygen/Sleep Monitor, 20+ Sports Modes Smart Watches for Women/Men, Activity & Step Tracker Smart Watch for Android/iOS PhonesBlack
US Store
TROTY

Fitness Tracker with Heart Rate/Blood Oxygen/Sleep Monitor, 20+ Sports Modes Smart ...
3.3

300+ bought

GBP 33

Fitbit Charge 6 Activity Tracker Heart Rate Monitoring, 7-Day Battery, Integrated Google Apps, Maps & Wallet, in-Depth Health Insights, Activity & Sleep Analysis, Obsidian/Black
US Store
Fitbit

Fitbit Charge 6 Activity Tracker Heart Rate Monitoring, 7-Day Battery, Integrated ...
4.1

300+ bought

GBP 160

Pedometer Watch Senior Friendly No App No Phone Required, Fitness Tracker | Step Counter, Heart Rate Monitor, Blood Oxygen Monitor, Sleep Tracker, Alarm Clock, Stopwatch, Fitness Tracker, Waterproof
US Store
Pautios

Pedometer Watch Senior Friendly No App No Phone Required, Fitness Tracker | Step ...
4

300+ bought

GBP 34

Amzhero Health Fitness Tracker with 24/7 Heart Rate, Blood Oxygen, Blood Pressure, Sleep Tracker, 5ATM Waterproof Activity Trackers with Step Tracker, Pedometer S & L Bands Included
US Store
Amzhero

Amzhero Health Fitness Tracker with 24/7 Heart Rate, Blood Oxygen, Blood Pressure, ...
3.7

300+ bought

GBP 53

Mindrose Fitness Tracker with Heart Rate Blood Oxygen Blood Pressure Sleep Monitor Step Calorie Counter Pedometer
US Store
Mindrose

Mindrose Fitness Tracker with Heart Rate Blood Oxygen Blood Pressure Sleep Monitor ...
3.7

300+ bought

GBP 40

8% OFF
XIAOMI Smart Band Active Global Version 1.47 Display 18-Day Battery Life Modes All-Day Health and Fitness Monitoring 5ATM 9 Active Black
US Store
XIAOMI

XIAOMI Smart Band Active Global Version 1.47 Display 18-Day Battery Life Modes ...
4.2

300+ bought

GBP 34 37

9% OFF
Smart Watch Fitness Tracker Answer/Make Call, 24/7 Heart Rate Spo2 Blood Pressure Monitor Sleep Tracker, 114 Sports Modes Pedometer Calorie Step Tracker, Waterproof Activity Tracker for Women Men
US Store
SOUYIE

Smart Watch Fitness Tracker Answer/Make Call, 24/7 Heart Rate Spo2 Blood Pressure ...
4.2

200+ bought

GBP 89 98

11% OFF
Smart Health Ring Fitness Tracker for Men Women, Sleep, Stress & Activity Monitoring, IP68 Waterproof, Long Lasting Battery, No Subscription Fees, Compatible with iOS & Android
US Store
Milavan

Smart Health Ring Fitness Tracker for Men Women, Sleep, Stress & Activity ...
3.9

200+ bought

GBP 51 57

Fitbit Inspire 3 Fitness Tracker Advanced Health Insights with Stress Management, Workout Intensity & Sleep Tracking, 24/7 Heart Rate, Includes Small and Large Classic Bands Lilac Bliss/Black
US Store
Fitbit

Fitbit Inspire 3 Fitness Tracker Advanced Health Insights with Stress Management, ...
4.4

200+ bought

GBP 102

Fitness Tracker Watch with Heart Rate, Activity Tracker, Pedometer Watch | Step Counter, Heart Rate Monitor, Sleep Monitor, Alarm Clock, Stopwatch, Fitness Tracker, IP68 Waterproof Smart Watches
US Store
LIVIKEY

Fitness Tracker Watch with Heart Rate, Activity Tracker, Pedometer Watch | Step ...
4

200+ bought

GBP 24

Smart Bracelet Health and Fitness Tracker No Subscription Fees Black | Heart Rate,Sleep,SpO2,HRV,Menstrual Cycle,No Screen,IP68 Waterproof,Comfort-Lightweight,35-day Battery Life,Band
US Store
QYZHARYX

Smart Bracelet Health and Fitness Tracker No Subscription Fees Black | Heart ...

200+ bought

GBP 63

36% OFF
Health Fitness Tracker, Smart Watch with 24/7 Heart Rate and Blood Oxy-gen Monitor, Sleep Tracker with IP68 Waterproof, Activity Tracker Pedometer Step Counter for Women Men
US Store
Sunorshop

Health Fitness Tracker, Smart Watch with 24/7 Heart Rate and Blood Oxy-gen Monitor, ...
3.9

200+ bought

GBP 53 83

42% OFF
Fitness Tracker Watch with Heart Rate, Activity Tracker, Pedometer Watch | Step Counter, Heart Rate Monitor, Sleep Monitor, Alarm Clock, Stopwatch, Fitness Tracker, IP68 Waterproof Smart Watches
US Store
LIVIKEY

Fitness Tracker Watch with Heart Rate, Activity Tracker, Pedometer Watch | Step ...
3.8

200+ bought

GBP 14 24

Fitness Smart Bracelet,24/7 Sleep & Health Tracker,170+ Sport Modes | Heart Rate, SpO2, Stress, Step & Calorie Tracker, 30 Days Battery, IP68 Waterproof, Screenless, Smart Wristband, Free App
US Store
Domhong

Fitness Smart Bracelet,24/7 Sleep & Health Tracker,170+ Sport Modes | Heart Rate, ...
3.8

200+ bought

GBP 102

Health Smart Bracelet, Activity & Fitness Trackers/SpO2/ Heart Rate/Blood Pressure/Sleep Stress/IP68 Waterproof for120 Sport Modes,Automatic Monitoring Wearable Fitness Tracker with Free App
US Store
PLKYYLIH

Health Smart Bracelet, Activity & Fitness Trackers/SpO2/ Heart Rate/Blood ...
4.8

200+ bought

GBP 62

Garmin vivosmart 5, Health & Fitness Tracker, S-M, Cool Mint | Monitor Your Health, Track Your Steps and Sleep, Smart Notifications, Up to 7 Days Battery Life
US Store
Garmin

Garmin vivosmart 5, Health & Fitness Tracker, S-M, Cool Mint | Monitor Your Health, ...
4

200+ bought

GBP 151

BIEMHA IP68 Waterproof Smart Ring - Fitness & Health Tracker with Sleep/Exercise Monitoring, Unisex for Women Men, iOS & Android Compatible, Long Lasting Battery Life, No Subscription Gold, 8
US Store
BIEMHA

BIEMHA IP68 Waterproof Smart Ring - Fitness & Health Tracker with Sleep/Exercise ...
4.2

200+ bought

GBP 102

COLMI R02 Smart Ring, Smart Ring for Women and Men, with a Charging Case, Supports Heart Rate, Blood Oxygen, Sleep Health Monitoring, No Subscription Fee. Silver, 8#
US Store
COLMI

COLMI R02 Smart Ring, Smart Ring for Women and Men, with a Charging Case, Supports ...
4.2

200+ bought

GBP 59

FITVII Slim Fitness Tracker AMOLED with Blood Oxygen, Blood Pressure, 24/7 Heart Rate and Sleep Tracking, IP68 Waterproof Activity Trackers and Smart Watches with Step Tracker, Pedometer for Women Men
US Store
FITVII

FITVII Slim Fitness Tracker AMOLED with Blood Oxygen, Blood Pressure, 24/7 Heart ...
3.9

200+ bought

GBP 53

Shop Smart Fitness Trackers Online from Ubuy UK to Monitor Your Health

In a fast-paced modern lifestyle, taking care of your health is extremely necessary. But how can you do that without compromising work and personal responsibilities? A fitness tracker is the absolute solution. Monitor your health and fitness through various metrics, such as steps taken, heart rate, sleep patterns, and level of activity. Even some fitness trackers enable you to track your calorie consumption, helping with weight management. Wear them on your wrist and receive instant notifications of severe health issues proactively. Make these fitness tracker watches or bracelets your reliable health companion, and let them track every health metric while you're awake.

We offer a wide range of fitness & exercise tracker watches, bracelets, and wearables from top brands. Browse the entire range of products and import them straight to your doorstep with just a few clicks. 

Exciting Deals and Offers on Fitness Trackers Online

Are you worried about your daily health and fitness? Discover incredible deals and exclusive discounts on a wide variety of fitness trackers from leading international brands. Here are some popular types of fitness trackers you can purchase online.

Basic Fitness Trackers

When you need to track your daily physical activities and calories burned in doing those activities throughout the day, Basic fitness trackers are the best exercise accessories you’ll ever have. Just wear them to assess physical activity metrics, such as steps, distance, and calories burned. 

Some basic fitness trackers also monitor sleep patterns, providing insights about the duration and quality of sleep. Not only steps but several basic fitness trackers also gauge your cycling and running activities as well.

Heart Rate Monitoring Trackers

Want more powerful fitness trackers that focus on your cardiac health? Fitness trackers with heart monitors are the perfect solution. Wrap these wearable fitness trackers on your wrist and record your heart rate.

These fitness tracker watches utilise optical or electrical sensors to detect your heart’s activity. By monitoring and analysing heart rate activity, you can determine which physical tasks or exercises are beneficial and which should be avoided. 

Heart Rate Monitoring Trackers with GPS

If you are an athlete or sports & outdoor fitness person looking for a smart gadget to assist with daily workouts and fitness tracking, heart rate monitoring trackers with GPS are a must-have tool. Track your heart rate during exercises to assess the training intensity and optimise the workout to improve performance.  

The GPS feature provides accurate information about distance, pace, and other metrics during various outdoor activities, such as running, cycling, or hiking. Monitor stress and activity levels by tracking critical vital signs, such as blood oxygen saturation, with these waterproof fitness trackers from brands like Withings. Assess sleep quality and overall health by measuring potential cardiac concerns. 

Smartwatch Fitness Trackers

Several brands, like Coros, offer fitness trackers in the form of smartwatches. This multipurpose approach adds a distinct statement to your personality while keeping you updated on your daily fitness & exercise activities.

Unlike conventional fitness tracker bracelets or bands from brands like Fitbit, these offer a broader range of features, such as SPO2 monitoring and ECG capabilities. Furthermore, the ability to connect with your smartphone enables access to integrated innovative smart features, including notifications, app access, and making calls conveniently. 

Smart Rings

These are similar to smartwatch fitness trackers for men & women but are worn as rings on the finger instead of the wrist. Count the number of steps to track your heartbeat and sleep patterns with detailed insights. Considered a discreet and comfortable alternative to traditional wrist-worn fitness trackers, these are best suited for individuals seeking less obtrusive designs. 

Several fitness tracker rings often feature smartphone connectivity for synchronisation and analysis of monitored health data, allowing you to optimise your everyday schedule accordingly. 

Select the Right Fitness Tracker to Monitor Your Health Goals

Still confused about which fitness tracker should suit you? We have categorised a variety of fitness trackers to help you achieve your everyday health and fitness goals. Browse the curated list and select the ideal fitness tracker for your specific health, outdoor & fitness tracking needs.

Type

Application

Popular Brands

Basic Fitness Trackers

Step counting, sleep tracking, calorie tracking

Xiaomi (Mi Band), Fitbit Inspire, Amazfit Band

Heart Rate Monitoring Trackers

Continuous heart rate monitoring, workout intensity tracking

Fitbit Charge, Garmin Vivosmart, Huawei Band

Heart Rate Monitoring Trackers with GPS

Outdoor running/cycling tracking, distance measurement, route mapping

Garmin Forerunner, Fitbit Charge 5, Polar Ignite

Smartwatch Fitness Trackers

All-in-one: fitness tracking, notifications, apps, health metrics

Apple Watch, Samsung Galaxy Watch, Fitbit Versa

Smart Rings

Discreet fitness and sleep tracking, heart rate, recovery insights

Oura Ring, Ultrahuman Ring, RingConn

Advanced Health Trackers

Blood oxygen, ECG, skin temperature, recovery, stress tracking

WHOOP Strap, Biostrap, Fitbit Sense, Garmin Venu

Kids Fitness Trackers

Basic activity tracking, parental control features, gamification for engagement

Fitbit Ace, Garmin Vivofit Jr., Angel Watch


Take a moment to explore the comprehensive collection of sports & outdoor recreation accessories available here.

Frequently Asked Questions About Fitness Trackers

  • Where Can I Buy Fitness Trackers Online in UK?

    Ubuy is the perfect online destination to buy a variety of fitness trackers from the leading international brands in UK.

  • Are Fitness Trackers Safe to Wear All Day?

    Fitness trackers are designed to be non-invasive and are often considered safe to wear all day long.

  • Do Fitness Trackers Work Without an Internet Connection?

    Yes, fitness trackers can function without an internet connection as they store data locally and sync with a device when a connection is available.

  • What is the Best Fitness Tracker?

    Apple smartwatches and Fitbit trackers are some of the best options for fitness trackers you can buy online.

  • Are Fitness Trackers Accurate?

    Fitness trackers can vary in accuracy depending on the type of data they measure. However, most of the fitness trackers show accurate results in controlled settings.