Yes, fitness smartwatches can track sleep. Most modern fitness smartwatches come equipped with sensors that monitor various physiological signals, such as heart rate and movement, to analyze sleep patterns. These devices typically use accelerometers to detect motion and, in combination with heart rate data, can estimate the different stages of sleep, including light, deep, and REM sleep. The gathered data is then synced to a companion app on a smartphone, allowing users to review their sleep duration, quality, and efficiency. Some advanced models may also offer insights into sleep disruptions and suggestions for improving sleep habits. However, the accuracy of sleep tracking can vary between different smartwatch models and manufacturers.
Best Fitness Smartwatches of March 2025
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Rating is 5 out of 5
Fitbit Versa 4 Fitness Smartwatch with Daily Readiness, GPS, 24/7 Heart Rate, 40+ Exercise Modes, Sleep Tracking and more, Waterfall Blue/Platinum, One Size (S & L Bands Included)
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Get inspired and stay accountable with Versa 4 + Premium - learn when to work out or recover, see real-time stats during exercise and find new ways to keep your routine fresh and fun.Operating temperature: -14° to 113°F. Radio transceiver: Bluetooth 5.0.Maximum operating altitude : 28,000 feet (8,534 m).
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Built for better fitness results: Daily Readiness Score(1), built-in GPS and workout intensity map, Active Zone Minutes, all-day activity tracking and 24/7 heart rate, 40+ exercise modes and automatic exercise tracking, water resistant to 50 meters
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Tools to measure and improve sleep quality: personalized Sleep Profile(1), daily sleep stages & Sleep Score, smart wake alarm and do not disturb mode. Compatibility-Apple iOS 15 or higher, Android OS 9 or higher
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Maintain a healthy body and mind: daily Stress Management Score, reflection logging, SpO2(2), health metrics dashboard(3), guided breathing sessions, menstrual health tracking and mindfulness content
2
Rating is 4.9 out of 5
Garmin vívoactive 5, Health and Fitness GPS Smartwatch, AMOLED Display, Up to 11 Days of Battery, Black
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Designed with a bright, colorful AMOLED display, get a more complete picture of your health, thanks to battery life of up to 11 days in smartwatch mode
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Body Battery energy monitoring helps you understand when you’re charged up or need to rest, with even more personalized insights based on sleep, naps, stress levels, workouts and more (data presented is intended to be a close estimation of metrics tracked)
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Get a sleep score and personalized sleep coaching for how much sleep you need — and get tips on how to improve plus key metrics such as HRV status to better understand your health (data presented is intended to be a close estimation of metrics tracked)
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Find new ways to keep your body moving with more than 30 built-in indoor and GPS sports apps, including walking, running, cycling, HIIT, swimming, golf and more
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Automatic nap detection and nap logging tracks your nap length during the day, providing personalized insights on how it affects your Body Battery energy monitoring and more (data presented is intended to be a close estimation of metrics tracked)
3
Rating is 4.8 out of 5
Smart Watch(Answer/Make Call), 2025 New Smartwatch for Men Women, 1.96" HD Fitness Watch with 110+ Sport Modes, Heart Rate, Sleep Monitor, Pedometer, IP68 Waterproof Activity Tracker for Android iOS
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2025 New Smart Watch with Bluetooth Call/Intelligent Notifications: The smart watches for men adopts bluetooth 5.3 version for a faster and more stable connection. With a built-in premium microphone and hd speaker, allowing you to answer calls and interact with voice assistants directly from smartwatch. Meanwhile, you can receive message notifications and read them from your watch, such as Facebook, Messenger, Instagram, Gmail, Whatsapp, Twitter etc. Just raise your wrist to view messages.
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1.96" HD Big Screen and Unlimited Customization Dials: smart watches for women adopt 1.96”TFT HD color display screen (320*386 resolution) which making it easy to operate and sensitive, experience crystal-clear visuals like never before. 4 level brightness adjustable allows you to read time and data clearly even under the glare. 200+ Multiple trendsetting combinations to match your mood and outfit of the day. Even create and customize your own mens smart watch faces from your phone gallery.
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24/7 Heart Rate Monitor and Sleep Tracker: Adopted high-performance optical sensors, Fitness tracker provides health monitoring features such as 24-hour continuity real-time Heart Rate, SpO2, and Sleep Monitoring(Deep/light sleep). It accurately monitors your heart rate in real time nd better understand your heart rate trends. Also, it provides a detailed analysis of your sleep quality and facilitating lifestyle adjustments by "GloryFit" continuously recording your sleep patterns.
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All Day Activity and Practical Functions: During exercise, sport smart watch automatically records daily steps, distance counter，calories burned, active minutes. This fitness watch men has other useful features offered like remote camera, music control, weather forecast, sedentary reminder, GPS tracking, stopwatch, find phone, raise to wake, alarm clock, calculator, etc. It makes things on your wrist simple and easy, and will always work as your effective daily assissant.
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Rating is 4.7 out of 5
Smart Watch, 1.85" HD Smartwatch for Men Women (Answer/Make Calls), Fitness Watch with Heart Rate/Sleep/IP68 Waterproof/120+ Sports Modes/Spo2 Monitor, Pedometer, Android Smart Watch for Android iOS
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Bluetooth Call and Voice Assistant: Smart watch built-in microphone and HD speaker, you can make and receive calls directly from this smart watches for men. You can also use the built-in voice assistant to ask questions, control music playback and more
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1.85'' HD Screen and DIY Dials: Android smart watch features a TFT HD color screen and curved 3D curved glass for superior picture quality and touch sensitivity. You can also choose from 100+ dials or personalize the dial with your favorite photos
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24 Hour Health Monitoring: The built-in sensor of the smart watches for women has been upgraded, which is faster and more powerful in monitoring heart rate, blood oxygen and sleep, and provides a comprehensive sleep quality analysis (non-medical standard)
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120+ Sports Modes: Active Fitness Tracker monitors over 120 activities including walking, running, cycling, swimming, yoga and more. Receive real-time stats directly on your wrist and record your stats in the "Da Fit" app
5
Rating is 4.6 out of 5
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
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【Health Metrics Monitoring】These fitness watches for women and men pack 24/7 heart rate, blood oxygen, blood pressure monitors and sleep tracker. You could check those real-time health metrics anytime, anywhere conveniently on your wrist and check the all-day data record in the App.The sleep tracker keeps track of time spent in different sleep stages including REM, light sleep,deep sleep,and the time when you wake up, helps you to get a better understanding of your sleep quality.
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【115 sports modes & All-Day Activity Tracking】There are more than 115 sports modes tracking available in the activity trackers and smartwatches, covering almost all daily sports activities you can imagine, gives you new ways to train and advanced metrics for more information about your workout performance.The all-day activity tracking feature monitors your steps, distance, and calories burned all the day, so you can see how much progress you've made towards your fitness goals.
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【Notifications for Calls and Messages】Getting notifications for incoming calls and texts right away from your wrist while on the go, allowing you to stay connected with family and friends with calls, texts, and email, so you never miss an important call or message. You could see the caller's name, reject the call, mute the ring-tone, and read the whole text messages directly from the smart watch for android phones and iphone.
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【A Considerate Life Assistant】The fitness trackers for women and men provide you with more features including drinking water reminder, sedentary reminder,menstrual cycle reminder, real-time weather display, remote camera shooting, music control,timer,and do-not-disturb mode, making it a considerate life assistant.With the GPS connectivity, you could get a map of your workout route in the app for outdoor activity by connecting to your phone GPS.
6
Rating is 4.5 out of 5
Jacoosa Smart Watch, 1.85" HD Smartwatches for Men Women, 100 Days Standby Time, 110+ Sport Modes with Fitness Tracker Watch, IP68 Waterproof, Heart Rate/Sleep Monitor, Fitness Watch for Android/iOS
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Bluetooth Call and Smart Notifications：Smart watches for men allows you to stay in touch with your family or friends anytime, anywhere, even when you're at the gym, outdoors, or doing other activities. You can also receive social media, Facebook, WhatsApp, and text message alerts on your wrist, so you'll never miss an important message or notification
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1.85 Inch HD Screen and DIY Dials: Smart watch features a TFT HD color screen for superior picture quality and touch sensitivity. Men's watches have more than 100 unique online dials to choose from, and you can also customize your dial. It can be any photo, such as family, pets, etc
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30 Days Standby Time and Multiple Features: Smartwatch has a built-in 1000 mAh high-capacity battery that ensures up to 8-14 days of use, and about 30 days of standby time with just 2 hours of charging. The sports watch also includes weather forecast, music control, camera control, alarm, stopwatch, find phone and many other useful features. Simply download “FitCloudPro” for free from the App Store or Google Play and enjoy your smart life
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110+ Fitness Modes and IP68 Waterproof: The fitness tracker watch offers up to 110+ exercise modes covering running, cycling, fitness and other activities to meet different users' preferences. During exercise, it records real-time data such as heart rate, steps, calories burned, distance and activity time. This men's smartwatch is IP68 waterproof and can be worn during outdoor activities, rainy days and hand washing (Note: Please do not use it in shower, sauna, swimming, etc.)
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Rating is 4.4 out of 5
Smart Watch(Answer/Make Call), 1.91" Smartwatch for Men Women, NEW Fitness Watch with 110+ Sport Modes, Fitness Activity Tracke with Pedometer/Sleep Monitor/Heart Rate/IP68 Waterproof, for Android iOS
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Bluetooth Call and Message Reminder: The mens smart watch are equipped with the latest Bluetooth 5.3 chip, which increases the connection speed by 80%, and a highly stable connection with no delay. Answer and make calls right from your wrist, and easily sync multiple mobile contacts. It also supports multiple smart reminders, including incoming calls, Email, texts, SMS messages (Facebook, WhatsApp, Twitter, Tiktok, Instagram, Gmail etc). You won't miss any important calls or notifications.
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1.91" HD Big Screen and DIY Dials: Fitness tracker features a TFT HD color screen (320 * 380 touch screen）and curved 3D curved glass for superior picture quality and touch sensitivity. Watch for men have more than 100+ unique online watch faces to choose from, you can also customize your watch face. It can be any photo, such as your family, star, pets, etc. Meanwhile, 4 levels manually adjust the brightness, so you can clearly see the displayed time and exercise data even in direct sunlight.
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24-Hour Health Activity Tracker: Smart watches for women track your Heart Rate, Blood Oxygen levels(SpO2) and Sleep patterns around the clock(deep sleep, light sleep, sleep quality analysis). And Your can track your period with menstrual cycle tracking and ovulation prediction as well. All data is presented in the "GloryFit" app, offering a comprehensive view of your health status. Watches women it is compatible with Android 5.0 and higher and iOS 9.0 and higher.
What data do smartwatches provide about your sleep?
Smartwatches can provide a variety of data about your sleep, leveraging their built-in sensors and algorithms. Here's a summary of the common types of sleep data they can provide:
- Sleep Stages: Smartwatches often track different sleep stages, such as light sleep, deep sleep, and REM (Rapid Eye Movement) sleep. They use motion sensors and sometimes heart rate variability to estimate these stages.
- Sleep Duration: They usually measure the total time spent asleep, from the moment you fall asleep until you wake up.
- Sleep Quality: Based on the duration and stages of sleep, many smartwatches provide an assessment of sleep quality, sometimes expressed as a score or sleep rating.
- Sleep Consistency: This refers to how consistent your sleep patterns are over a period of time, helping you understand if you're maintaining regular sleep schedules.
- Heart Rate During Sleep: Smartwatches often monitor heart rate throughout the night, providing insights into how your heart rate varies between different sleep stages.
- Oxygen Saturation (SpO2): Some smartwatches measure blood oxygen levels during sleep, which can be important for identifying potential issues like sleep apnea.
- Sleep Interruptions: They can identify periods of wakefulness or interruptions during the night and calculate how frequently they occur.
- Breathing Rate: Some devices monitor your breathing rate while you sleep, which can offer additional insights into sleep quality.
- Snore Detection: A few smartwatches come with snore detection capabilities, either built-in or through companion apps that use the microphone to detect snoring.
- Temperature Variability: Some advanced models track skin temperature variations during sleep, which might provide insights into overall health.
The accuracy and type of data available can vary significantly between smartwatch models and brands, and it's important to remember that while they can provide useful insights, they are not a replacement for professional medical assessment.
What is a sleep score and how is it calculated?
A sleep score is a metric used to quantify the quality of a person's sleep over a certain period, typically derived from data collected by wearable devices or apps. The exact calculation can vary somewhat by provider, but generally, a sleep score is based on several key factors:
- Duration: This measures how long you sleep compared to a recommended amount based on your age and health profile. Getting enough sleep is essential for a good score.
- Quality: This can include how much time you spend in various sleep stages, such as REM (Rapid Eye Movement) and deep sleep. More time in these restorative stages typically leads to a better score.
- Restfulness: This accounts for how often you wake up during the night, how restless you are, and how many times you experience disruptions in your sleep.
- Consistency: Regularity in your sleep schedule, such as going to bed and waking up at the same times each day, can positively influence your score.
- Latency: This measures how long it takes for you to fall asleep once you go to bed.
Each company or app might have its algorithm to weigh these factors, often combining them into a composite score on a scale (for example, 0 to 100 or 1 to 10). Additional factors might include heart rate variability, breathing disturbances, or other physiological metrics depending on the device being used.
The goal of the sleep score is to provide a simple, easily understandable number that represents the health of your sleep and can be used to track improvements or identify areas needing attention over time.
How customizable are sleep tracking settings on smartwatches?
The customization options for sleep tracking settings on smartwatches can vary significantly depending on the brand and model. However, most smartwatches offer several key features that users can typically adjust to suit their personal preferences. Here are some common customizable settings you might find in sleep tracking on smartwatches:
- Sleep Goals: Users can often set specific sleep duration goals, such as aiming for a certain number of hours each night.
- Bedtime and Wake-Up Reminders: Many smartwatches allow you to set reminders to help encourage a consistent sleep schedule by notifying you when it's time to go to bed and when to wake up.
- Sleep Stages Tracking: While the tracking itself is automatic, you may have options to view detailed insights about your sleep stages, such as light, deep, and REM sleep.
- Silent Alarms: Users can set vibrating alarms to wake up without disturbing others, adjusting the time and days they are active.
- Do Not Disturb Mode: Customizable settings can enable a "Do Not Disturb" mode during sleep hours to prevent notifications from interrupting sleep.
- Sensitivity Levels: Some devices let users adjust the sensitivity of sleep tracking, which can affect how sleep and wake periods are recorded.
- Nap Tracking: Although not always available, some devices might offer the option to track naps separately from nighttime sleep.
- Data Synchronization: Users can generally customize whether sleep data automatically syncs with smartphone apps or other health platforms.
It's important to check the specific capabilities of your smartwatch model and its associated app, as developers regularly update software, adding new features and customization options. Additionally, third-party apps may offer enhanced or alternative settings for more detailed sleep tracking.
How reliable is smartwatch data for sleep analysis?
The reliability of smartwatch data for sleep analysis can vary based on several factors, including the specific device, the sensors it uses, and how it processes data. Generally, modern smartwatches provide a reasonable estimate of sleep patterns, but there are limitations to be aware of.
- Sensors and Technology: Most smartwatches use accelerometers and sometimes heart rate monitors to track sleep. These sensors can detect movement and changes in heart rate, which help infer sleep stages like REM, light, and deep sleep.
- Accuracy: While smartwatches can be good at tracking overall sleep duration and detecting wake periods, their accuracy in identifying different sleep stages is often lower compared to polysomnography (PSG), the gold standard for sleep studies performed in clinical settings.
- Validation Studies: Some brands and models have been validated in studies against polysomnography, showing relatively good accuracy for total sleep time but varying accuracy for sleep stages. Always check for available studies on your specific device.
- Individual Variability: Results can vary from person to person. Factors such as wrist movement during sleep, skin contact, and calibration to individual sleep patterns can affect data accuracy.
- Technology Improvements: With advancements in sensor technology and data algorithms, the accuracy and reliability of sleep tracking on smartwatches are continually improving. Newer devices tend to have better performance.
- Practical Use: While not as precise as a sleep study, smartwatches can still provide valuable insights for everyday use, such as identifying trends over time and helping users make lifestyle adjustments to improve sleep quality.
Overall, while not a substitute for professional sleep studies, smartwatches can be a useful tool for casual sleep tracking and increasing awareness about sleep habits. If you have specific concerns about sleep disorders, it is always best to consult with a healthcare professional.
