Amazfit GTS 4 Smart Watch Review: GPS Tracking, Health Monitoring, and Fitness Features for 2026
The Importance of Choosing the Right Wearable Device
In 2026, wearable technology has become an essential tool for health monitoring, fitness tracking, and daily productivity. With the proliferation of smartwatches and fitness trackers, users face a complex decision-making process to select a device that aligns with their lifestyle, activity level, and data needs. A well-chosen wearable can provide real-time insights into heart rate, sleep patterns, and exercise performance, while also offering seamless integration with smartphones and health applications. For individuals prioritizing outdoor navigation, advanced biometric tracking, or long battery life, the Amazfit GTS 4 represents a compelling option. This review evaluates the Amazfit GTS 4 based on its core functionalities, sensor accuracy, user experience, and compatibility with modern fitness ecosystems. By analyzing its features through the lens of consumer demand, this guide helps users determine whether the GTS 4 is a suitable choice for their specific needs, whether they are seasoned athletes, casual fitness enthusiasts, or health-conscious professionals seeking reliable data without compromising comfort or convenience.
Quick Overview
| Feature | Details |
|---|---|
| Device Category | Smartwatch with fitness tracking capabilities |
| Tracking Metrics | Heart rate, SpO₂, stress levels, breathing rate, GPS location |
| Sensors | BioTracker 4.0 PPG, dual-band GPS, Bluetooth 5.3 |
| Battery Life | Up to 14 days on a single charge |
| Platform Compatibility | iOS and Android |
| Intended Users | Fitness enthusiasts, outdoor adventurers, health monitors |
| Durability | IP68 water resistance, scratch-resistant AMOLED display |
| Software Support | Zepp OS, integration with Apple Health and Google Fit |
The Amazfit GTS 4 combines advanced health monitoring with robust GPS functionality, making it ideal for users who require accurate data during physical activity or long-distance travel. Its 1.75-inch AMOLED display and lightweight design enhance usability, while compatibility with major health platforms ensures seamless integration into existing wellness routines.
GPS Tracking and Navigation Capabilities
The Amazfit GTS 4 leverages dual-band GPS technology to deliver precise location data, a critical feature for users who rely on real-time navigation during outdoor activities. This system employs circularly-polarized antenna design to minimize signal interference, ensuring consistent connectivity even in challenging environments such as dense forests or urban areas with limited satellite visibility. The device’s ability to import route files from the Zepp App allows users to plan and follow customized paths with ease, making it a valuable tool for hikers, runners, and cyclists. Additionally, the watch supports real-time tracking of distance covered, elevation changes, and estimated time of arrival, providing actionable insights for route optimization.
Dual-Band GPS Accuracy and Environmental Adaptability
The dual-band GPS system enhances positioning accuracy by utilizing both L1 and L2 frequency bands, reducing the risk of signal loss due to atmospheric interference. This feature is particularly beneficial for users in regions with high electromagnetic activity or during extended outdoor excursions where traditional GPS might struggle. The watch’s ability to maintain a stable connection in low-signal environments ensures reliable tracking for activities such as trail running or mountain biking. However, the absence of GLONASS or Galileo support may limit its effectiveness in certain global locations, which could be a consideration for international travelers.
Route Import and Real-Time Navigation
The Amazfit GTS 4’s integration with the Zepp App enables users to download pre-planned routes, which are then displayed on the watch’s AMOLED screen for on-the-go navigation. This functionality is particularly useful for users who prefer to avoid smartphone dependency during physical activity. The watch also provides turn-by-turn directions via Bluetooth-connected headphones, ensuring hands-free operation. While the route import feature simplifies navigation, users may need to periodically check their phone for updates, as the watch’s GPS data is not continuously synchronized with external mapping services.
GPS Performance in Dynamic Environments
For users who engage in high-intensity activities such as trail running or mountain climbing, the GTS 4’s GPS performance is notable for its ability to track movement in real-time without significant latency. The dual-band system ensures that location data remains accurate even when the user is moving rapidly or changing elevation. However, the lack of advanced geofencing or route-sharing capabilities may be a drawback for users who require more sophisticated location-based features.
Health Monitoring and Biometric Accuracy
The Amazfit GTS 4 introduces the BioTracker 4.0 PPG sensor, a significant upgrade from previous iterations that enhances the accuracy of health metrics such as heart rate, blood oxygen saturation, and stress levels. This sensor uses advanced optical technology to measure physiological data continuously, providing users with 24/7 health insights. The watch also includes a breathing rate monitor, which is particularly useful for stress management and sleep quality analysis. These features make the GTS 4 a strong contender for individuals seeking comprehensive health tracking without the need for additional devices.
24/7 Health Metrics and Stress Detection
The BioTracker 4.0 sensor’s ability to monitor heart rate, SpO₂, and stress levels in real-time offers users a holistic view of their health status. The device’s stress detection algorithm uses machine learning to analyze heart rate variability and other biometric signals, providing actionable feedback to help users manage their workload and recovery periods. This functionality is especially beneficial for professionals who require continuous health monitoring to balance work and wellness. However, the accuracy of stress detection may vary depending on individual physiology and environmental factors, which could affect its reliability for medical-grade use.
Breathing Rate Monitoring and Sleep Analysis
The GTS 4’s breathing rate monitoring feature is designed to track respiratory patterns during rest and activity, offering insights into overall cardiovascular health. This data can be combined with sleep tracking metrics to provide a more comprehensive understanding of sleep quality and recovery. While the watch’s sleep analysis is robust, it does not include advanced sleep stage detection or personalized sleep recommendations, which may be a limitation for users seeking deeper sleep insights.
Biometric Data Reliability and Calibration
The BioTracker 4.0 sensor’s performance is influenced by factors such as skin contact, ambient light, and movement. Users may need to calibrate the sensor periodically for optimal accuracy, especially during intense physical activity or when transitioning between different environments. While the watch’s health metrics are generally reliable for general fitness tracking, they are not intended for medical diagnosis or clinical use. The absence of medical-grade certification may be a consideration for users with specific health concerns.
Battery Life and Charging Efficiency
The Amazfit GTS 4’s 14-day battery life is a standout feature for users who prioritize long-term usability without frequent charging. This extended battery capacity is achieved through a combination of low-power sensors, optimized software algorithms, and efficient power management. The watch’s battery efficiency is particularly advantageous for users who engage in prolonged outdoor activities or travel, as it reduces the need for daily charging. However, the battery life may decrease when using GPS-intensive features or when the device is paired with multiple Bluetooth accessories.
Power Consumption During Intensive Use
When the GTS 4 is used for continuous GPS tracking, heart rate monitoring, or real-time data broadcasting, its battery consumption increases significantly. Users who rely on these features for extended periods may need to recharge the device more frequently. The watch’s power-saving mode can help extend battery life during less active periods, but it may reduce the frequency of health metric updates. This trade-off between battery longevity and data accuracy is a common consideration in wearable technology.
Charging Time and Efficiency
The GTS 4’s magnetic charging cable ensures a seamless charging experience, with a full charge taking approximately 2 hours. The device’s ability to retain up to 14 days of battery life between charges makes it ideal for users who travel frequently or have limited access to power sources. However, the absence of fast-charging capabilities means that users may need to plan ahead for extended use. The watch’s battery efficiency is further enhanced by its low-power display and optimized software, which minimize unnecessary energy consumption.
Environmental Impact on Battery Performance
The GTS 4’s battery life is influenced by environmental factors such as temperature and humidity. Extreme conditions may affect the device’s power consumption, potentially reducing battery life in colder or hotter climates. Users should be aware that battery performance may vary depending on the environment in which the watch is used, and they should adjust their charging habits accordingly.
Compatibility and Ecosystem Integration
The Amazfit GTS 4’s compatibility with both iOS and Android platforms ensures broad accessibility for users across different smartphone ecosystems. The watch’s integration with the Zepp App allows for seamless synchronization of health and fitness data, while its support for third-party apps like Apple Health and Google Fit enhances its utility for users who prefer to consolidate their wellness data in a single location. This compatibility is a key advantage for individuals who want to maintain a cohesive health tracking strategy without relying on multiple devices.
Cross-Platform Synchronization and Data Sharing
The GTS 4’s ability to sync with both iOS and Android devices ensures that users can access their health data across different platforms. The Zepp App provides a centralized interface for managing fitness goals, analyzing activity patterns, and receiving personalized recommendations. Additionally, the watch’s support for Apple Health and Google Fit allows users to import and export data between these platforms, making it easier to maintain a comprehensive health profile. However, the integration with third-party apps may be limited compared to more specialized fitness devices, which could affect its appeal for users with specific data-sharing needs.
App Ecosystem and Feature Expansion
The GTS 4’s compatibility with a range of fitness applications, including Strava, Komoot, and adidas Running, enhances its versatility for different types of users. These apps provide additional insights into training performance, route planning, and activity analysis, which can be valuable for both casual and serious athletes. However, the watch’s support for certain apps may be limited by its hardware capabilities, which could restrict the depth of integration with some third-party services.
Future-Proofing and Software Updates
The GTS 4’s use of Zepp OS ensures that users can benefit from regular software updates, which may introduce new features or improve existing functionalities. This adaptability is important for maintaining the device’s relevance in a rapidly evolving market. However, the frequency and scope of software updates may vary, which could affect the long-term usability of the device. Users should consider the availability of ongoing support when evaluating the GTS 4’s long-term value.
Pros & Cons
Pros
- Dual-band GPS: Provides highly accurate location data, ideal for outdoor navigation and real-time tracking.
- BioTracker 4.0 Sensor: Offers advanced biometric monitoring for heart rate, SpO₂, stress levels, and breathing rate.
- Long Battery Life: Up to 14 days of usage on a single charge, reducing the need for frequent recharging.
- AMOLED Display: High-resolution screen ensures clear visibility of health metrics and activity data.
- Cross-Platform Compatibility: Works seamlessly with both iOS and Android devices, along with third-party health apps.
- Water Resistance: IP68 rating allows for use in light rain and water-based activities up to 50 meters.
- 150+ Sports Modes: Offers extensive customization for different types of exercise and training.
- Smart Assistant Integration: Supports Amazon Alexa for voice-activated commands and call management.
Cons
- Limited Water Resistance: While IP68-rated, the device is not suitable for swimming or prolonged water exposure.
- No LTE Connectivity: Users must rely on a paired smartphone for internet access and notifications.
- Fewer Third-Party Integrations: Some advanced fitness apps may not be fully supported, limiting data sharing options.
- Battery Drain During GPS Use: Continuous GPS tracking significantly reduces battery life, requiring frequent charging for extended outdoor use.
- No Medical Certification: Health metrics are not intended for medical diagnosis or clinical use, which may be a drawback for users with specific health needs.
Final Verdict: Who This Wearable Is Best For (and Who Should Skip It)
The Amazfit GTS 4 is best suited for fitness enthusiasts, outdoor adventurers, and health-conscious individuals who require accurate GPS tracking, biometric monitoring, and cross-platform compatibility. Its 14-day battery life and dual-band GPS make it an excellent choice for users who engage in long-distance running, hiking, or cycling. The BioTracker 4.0 sensor and support for 150+ sports modes also make it a strong option for those who prioritize comprehensive health and fitness tracking. However, users who require advanced water resistance, LTE connectivity, or specialized medical-grade health features may find the GTS 4 less suitable. Additionally, individuals who prefer a more streamlined interface or fewer third-party integrations may find the watch’s feature set overwhelming. Overall, the GTS 4 offers a well-rounded balance of functionality and usability, making it a compelling choice for a wide range of users in 2026.
Frequently Asked Questions (FAQs)
How accurate is the Amazfit GTS 4’s GPS tracking?
The Amazfit GTS 4 uses dual-band GPS technology to deliver positioning accuracy comparable to top handheld GPS devices. This system minimizes signal interference, ensuring reliable tracking in challenging environments like dense forests or urban areas. However, the absence of GLONASS or Galileo support may affect its effectiveness in certain global locations.
Can the Amazfit GTS 4 monitor heart rate and blood oxygen saturation continuously?
The BioTracker 4.0 PPG sensor enables 24/7 monitoring of heart rate, blood oxygen saturation, and stress levels. The device also tracks breathing rate with a single tap, providing comprehensive health insights. However, the accuracy of these metrics may vary based on individual physiology and environmental factors.
How long does the Amazfit GTS 4 last on a single charge?
The watch offers up to 14 days of battery life on a single charge, thanks to optimized power management and low-power sensors. However, continuous GPS tracking or Bluetooth connectivity may reduce this duration, requiring more frequent charging for extended outdoor use.
Is the Amazfit GTS 4 compatible with both iOS and Android devices?
Yes, the GTS 4 works seamlessly with both iOS and Android smartphones. It integrates with popular health apps like Apple Health and Google Fit, allowing users to sync data across platforms. The Zepp App provides additional customization options for fitness tracking and route planning.
Can the Amazfit GTS 4 be used for swimming or water-based activities?
The GTS 4 has an IP68 water resistance rating, which protects it from light rain and splashes. However, it is not designed for swimming or prolonged water exposure. Users should avoid submerging the device in water beyond the specified limits to prevent damage.
What types of fitness activities can the Amazfit GTS 4 track?
The GTS 4 supports over 150 sports modes, including running, cycling, hiking, and strength training. It automatically recognizes 8 sports for real-time data tracking, making it suitable for a wide range of physical activities. The device also provides detailed post-workout analysis through the Zepp App.
Does the Amazfit GTS 4 have a built-in smart assistant?
The GTS 4 includes Amazon Alexa for voice-activated commands and call management. This feature allows users to receive and answer phone calls via Bluetooth, as well as add membership codes for simplified shopping. However, the smart assistant functionality is limited compared to more advanced smartwatches.
How does the Amazfit GTS 4 handle data synchronization with third-party apps?
The GTS 4 supports integration with apps like Strava, Komoot, and adidas Running, allowing users to sync workout data across platforms. While it works with major health apps like Apple Health and Google Fit, some advanced fitness applications may have limited compatibility, affecting data sharing options.
