In today’s fast-paced world, investing in a wearable with SpO₂ monitoring can make all the difference for restorative nights. If you’re looking to understand your sleep cycles, improve your nighttime routine, or optimize recovery, this guide will help you choose the right device.
1. Fitbit Charge 6
Best for: Reliable sleep insights & fitness tracking
Fitbit continues to lead the market, and the Charge 6 proves why. It tracks your Sleep Score, sleep stages (light, deep, REM), and even detects irregular heart rhythms that might affect sleep. With its smart wake alarm, it wakes you during your lightest sleep phase.
- Battery life: up to 7 days
- Heart rate & SpO2 monitoring
- Comfortable design for overnight wear
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- Pixel Buds Pro 2 are small, light, and made to stay put; use the twist-to-adjust stabilizer to lock your earbuds in duri…
2. Garmin Vivosmart 5
Best for: Accurate sleep tracking & wellness insights in a slim band
Garmin is well-known for its performance wearables, and the Vivosmart 5 delivers surprisingly advanced sleep tracking in a slim, lightweight design. It measures light, deep, and REM sleep stages, along with blood oxygen levels (SpO2) and heart rate variability (HRV) overnight. It also includes a Pulse Ox sensor for detecting potential breathing issues while you sleep.
What sets it apart is its Body Battery™ feature — a daily energy score that combines sleep, stress, and activity levels to help you know when to rest or train.
- Comfortable slim fit, ideal for overnight use
- Tracks sleep stages, HRV, respiration rate, and SpO2
- Body Battery™ energy monitoring
- Smart notifications and silent alarms
- Battery life: up to 7 days
- Syncs with Garmin Connect app (Android & iOS)
- Easy-to-use, comfortable smart fitness tracker, once setup through the Garmin Connect app, has a touchscreen and button …
- Get an uninterrupted picture of your health with up to 7 days of battery life in smartwatch mode; safe for swimming and …
- Understand your body by monitoring your respiration, Pulse Ox (Pulse Ox not available in all countries; it is not a medi…
3. Whoop Strap 5.0
Best for: Athletes & biohackers
Whoop takes sleep seriously. With no screen and a subscription-based app, it delivers deep analytics on your sleep, recovery, and strain levels. The Whoop 5.0 auto-detects naps and customizes bedtime recommendations based on your body.
- 24/7 health monitoring
- Advanced recovery tracking
- No distractions (screen-free)
- EVERYTHING YOU NEED IS INCLUDED: Your WHOOP purchase includes a 12-month WHOOP Life membership, a WHOOP MG device, a Sup…
- CONTINUOUS MONITORING: WHOOP continuously monitors your physiological data, including sleep, stress, VO2 max, blood pres…
- ADVANCED INSIGHTS: WHOOP Life seamlessly integrates total-health screening into your routine
4. Apple Watch Series 9
Best for: iPhone users seeking an all-in-one smartwatch
Apple Watch Series 9 integrates seamlessly with iOS and now offers advanced sleep tracking via the Health app. It records time asleep, sleep stages, and breathing rate. While not as advanced as dedicated sleep trackers, it’s great for all-around use.
- Sleep reminders & wind-down mode
- Syncs with iPhone & HealthKit
- Daily sleep trends
![Apple Watch Series 9 [GPS 45mm] Smartwatch with Starlight Aluminu...](https://m.media-amazon.com/images/I/31LTvs7lSkL.jpg)
- CARBON NEUTRAL — An aluminum Apple Watch Series 9 paired with the latest Sport Loop is carbon neutral. Learn more about …
- WHY APPLE WATCH SERIES 9 — Your essential companion for a healthy life is now even more powerful. The S9 chip enables a …
- ADVANCED HEALTH FEATURES — Take an ECG anytime. Get notifications if you have an irregular heart rhythm. See how much ti…
5. Xiaomi Smart Band 8 Pro
Best for: Budget-conscious users
If you’re looking for affordability without sacrificing essential sleep features, the Xiaomi Smart Band 8 Pro is a winner. It tracks sleep stages, breathing, and heart rate—and all with a sleek AMOLED display and a lightweight build.
- Great battery life (up to 10 days)
- Affordable & stylish
- Decent sleep accuracy for the price
- Massive 1.74″ rectangle AMOLED display
- All-new quick release structure with metallic frame
- 22.5g lightweight design, 9.99mm slim body*
Final Thoughts
Sleep is your superpower—and tracking it just got easier in 2025. Whether you want advanced metrics or a budget-friendly tracker, there’s a smart band or watch that fits your lifestyle. Always consider comfort, data accuracy, and integration with your devices before buying.
1. Which sleep tracking watch or smart band is the most accurate in 2025?
The Fitbit Charge 6 and Garmin Vivosmart 5 are among the most accurate digital wearables for sleep tracking in 2025. They provide detailed data on sleep stages, heart rate variability (HRV), and blood oxygen (SpO2) levels, making them reliable tools for monitoring sleep quality.
2. Can I wear a smartwatch or fitness band all night?
Yes. Modern smartwatches and fitness bands like the Xiaomi Smart Band 8 Pro and Fitbit Charge 6 are designed to be lightweight and comfortable for overnight use. Most also feature sleep mode or do-not-disturb options to avoid distractions while you sleep.
3. Do these devices help detect sleep disorders like sleep apnea?
Many wearables include blood oxygen (SpO2) and breathing rate tracking, which can help detect abnormal patterns during sleep. Devices like the Garmin Vivosmart 5 and Fitbit Charge 6 can flag irregular breathing. However, they are not medical devices and cannot diagnose sleep apnea. Consult a doctor for a proper evaluation.
4. Do I need a subscription to access sleep data?
Most smart bands and watches offer free basic sleep data. For example, Xiaomi Smart Band 8 Pro and Fitbit Charge 6 include sleep tracking at no extra cost. However, some advanced analytics or historical data may require a subscription, such as Fitbit Premium.
5. Can I sync these devices with my smartphone?
Yes. All smartwatches and fitness bands listed can sync with Android and iOS devices via Bluetooth. You can track your sleep patterns through companion apps such as Fitbit, Garmin Connect, Mi Fitness, or Apple Health, depending on the device.
