Modern smartwatches like Garmin Venu 4 and Apple Watch Series 10 track heart rate and SpO₂ with impressive accuracy, keeping your fitness and wellness on point.
Each watch offers specialized features such as sleep monitoring, stress tracking, altitude insights, and workout alerts to fit different lifestyles.
Choosing the right smartwatch is a balance of battery life, comfort, and ecosystem, with Garmin and Fitbit offering long usage and Apple and Samsung excelling in integration.
Modern smartwatches have advanced significantly beyond simple displays and touchscreens. Heart rate monitoring and SpO2 readings have become vital features for users who focus on maintaining a healthy lifestyle. The latest models offer enhanced biological signal tracking and improved efficiency.
Let’s explore the best smartwatches for heart rate and SpO2 monitoring, along with the benefits they offer.
Garmin Venu 4 is one of the best smartwatches for long periods of vital-sign monitoring. This model delivers effective health-tracking features that quickly detect oxygen drops and sleep insights, works well in high-altitude areas, lasts 12 days on a single charge, and syncs easily with Android or iPhone.
Apple Watch Series 10 combines ECG, detailed sleep tracking, and posture insights for a comprehensive overview of vitality, lasting 36 hours on a quick recharge. This model boasts an active ecosystem companion to drive performance and boost responsiveness. This premium smartwatch is ideal for long-term usage and constant monitoring.
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Pixel Watch 3 is renowned for its continuous heart rate monitoring and SpO2-based AI insights into sleep patterns. Its comfortable design and frame give it an aesthetic quality that is far greater than that of other devices in its range. Its high processing power and Wear OS enable this smartwatch to track vital signs for extended periods, making it ideal for workouts and other strenuous exercise.
Galaxy Watch 8 provides features that identify sleep apnea risks, SpO2 averages, heart rate statistics, and energy levels. Its light build is perfect for gym sessions and sleep tracking alike. Wear OS 5 provides this watch with an interactive interface enhanced by an AMOLED screen. This model is also useful for marathons and long workouts, providing 36 hours of activity on a single charge.
Fitbit Sense 2 monitors SpO2 variations and heart rate through an improved Google AI interface. The device also tracks oxygen levels and provides a detailed sleep monitoring report. Its sleek profile and 6 days of battery life make it well-suited for long-term use.
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This lineup’s elite smartwatches cater to a range of user needs. Each of these models is versatile and unique, offering features that outclass their counterparts. From Samsung’s premium products to Garmin’s remarkable devices, these watches offer reliability and efficiency.
Although all of these models are optimal for heart rate and SpO2 monitoring, the final choice depends on the user. Buyers should consider the specifications and benefits of their desired product before making a purchase.
1. Which smartwatch is best for accurate heart rate and SpO₂ tracking in 2026?
Smartwatches like Garmin Venu 4, Apple Watch Series 10, and Fitbit Sense 2 offer highly accurate heart rate and SpO₂ tracking, along with sleep and stress insights.
2. Can smartwatches track oxygen levels while sleeping?
Yes, most top smartwatches in 2026, including Garmin Venu 4 and Samsung Galaxy Watch 8, track SpO₂ continuously, especially during sleep, helping identify dips or irregular oxygen levels.
3 .How long does the battery last on these health-focused smartwatches?
Garmin Venu 4 lasts up to 12 days, Fitbit Sense 2 lasts around 6+ days, Apple Watch Series 10 lasts around 36 hours, and Google Pixel Watch 3 lasts about 24 hours, depending on usage.
4. Can smartwatches replace professional medical devices?
No, smartwatches provide helpful health insights, but they are not medical devices. They’re best used to monitor fitness, wellness, and trends rather than to diagnose or treat conditions.
5. Which smartwatch is best for outdoor activities and extreme sports?
The Garmin Fenix 8 excels for outdoor enthusiasts, offering all-day SpO₂, heart rate tracking, HRV recovery, GPS mapping, and a solar-boosted battery for long treks or intense workouts