Samsung · Reviewed by StepGeekTV Online · Published 2026-07-23
Based on a review by StepGeekTV Online (accessed 2026-07-23).
Based on this review alone: buy it if you care about world's only smartwatch capable of measuring 4 main health pillars (eating, sleeping, exercise, stress/mind) — just accept not a certified medical device, despite its advanced health monitoring capabilities.
The reviewer highly recommends the Galaxy Watch 9, enthusiastically calling it a "very worthwhile assistant doctor" due to its extensive health monitoring features. They highlight its ability to provide comprehensive health insights that encourage better self-care, stating it offers "a lot that is very interesting."
This review provides an in-depth look at the Samsung Galaxy Watch 9, focusing on its advanced health monitoring capabilities, including unique sensor technology and specific measurements for various health risks. It also covers fitness tracking features, general specifications, and user experience aspects like display quality and responsiveness.
The Galaxy Watch 9 is an exceptional personal health assistant, offering the most comprehensive health tracking features available on a smartwatch to date. Its unique 7-color BioActive sensor accurately measures Carotenoid levels in the skin to indicate antioxidant status and assesses AGE to identify risks for diseases like diabetes, functionalities not typically found in other smartwatches. While the device is not a medical instrument, its array of sensors provides data comparable to professional equipment, such as body fat percentage measurements akin to InBody machines. If you are deeply committed to proactive health management and desire a smart wearable that provides in-depth, actionable health insights, this device is highly recommended. For those who only need basic fitness tracking, its advanced features might be an overkill.
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The reviewer states the Galaxy Watch 9 is currently the only brand globally capable of measuring the four core pillars of health: eating, sleeping, exercising, and mental stress.
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The Galaxy Watch 9 features an advanced 7-color BioActive sensor, which is more advanced than the typical 3-5 color sensors found in other smartwatches.
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The Galaxy Watch 9 includes a Running Coach feature and can monitor running posture, making it suitable for runners.
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The reviewer confirms that the Galaxy Watch 9 supports ECG (electrocardiogram) for heart electrical activity and general heart rate measurement.
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The watch includes AGE measurement, which assesses the risk of diabetes, a feature highlighted as very important.
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The watch can detect snoring and sleep apnea, measure BMI, and calculate body fat percentage, which the reviewer finds impressive.
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The watch supports "Raise to Talk" with Gemini, allowing users to ask questions instantly in 22 languages, including Thai, which the reviewer finds very cool.
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The 7-color sensor enables the watch to measure Carotenoid levels, which is superior to the 3-5 color sensors found in typical devices, and is measured by pressing the thumb on the skin.
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The reviewer claims the new sensor is more accurate and provides broader indications compared to previous versions.
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The reviewer demonstrates measuring antioxidant levels (Carotenoid in skin) on the cameraman, who received a "low" reading of "50-something," indicating poor self-care. This measurement is linked to Alpha and Beta Carotene intake.
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The reviewer explains that the watch measures AGE using a method similar to hospitals, clarifying it's not a medical device but can indicate risks for diseases like diabetes.
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The reviewer states that the watch can measure body fat percentage, and they were told it's "close to" the accuracy of professional InBody machines.
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The watch detects snoring and sleep apnea events per hour, which helps identify risks like brain oxygen deprivation and potential Alzheimer's disease.
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The watch features a durable aluminum case, Sapphire display, Super AMOLED screen with 3000 Nits brightness, 32GB internal memory, and 2GB RAM.
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The cameraman, who wore the watch for a 10km run, noted the display was very clear and bright even in sunlight, with vibrant colors, and the touchscreen was responsive.
The Galaxy Watch 9 offers comprehensive health tracking, being the only brand to measure 4 core health pillars: eating, sleeping, exercising, and mental stress. It also features an advanced 7-color BioActive sensor to measure Carotenoid levels for antioxidant status, AGE for diabetes risk, ECG for heart health, and tracks BMI, body fat percentage, snoring, and sleep apnea.
The reviewer claims the new 7-color BioActive sensor is more accurate and provides broader indications. Specifically, the body fat percentage measurement is reported to be close to the accuracy of professional InBody machines. The AGE measurement method is described as similar to those used in hospitals.
The Galaxy Watch 9 is well-suited for runners, featuring a Running Coach, running posture analysis, and VO2 Max measurement. The cameraman, a runner, experienced excellent display visibility and clarity even in direct sunlight during a 10km run.
The Galaxy Watch 9 boasts a Super AMOLED display with an impressive 3000 Nits brightness, ensuring excellent visibility even in direct sunlight. Its construction features a durable aluminum case and a Sapphire glass screen for enhanced robustness.
The Galaxy Watch 9 offers features that can help identify potential health risks. It measures AGE (Advanced Glycation End-products), which can indicate a risk for diabetes. Additionally, its ability to detect snoring and track sleep apnea episodes per hour can signal risks like brain oxygen deprivation, which is associated with an increased risk of Alzheimer's disease. However, the reviewer explicitly states it is not a medical device.
The Galaxy Watch 9 includes an integrated AI assistant feature called "Raise to Talk" which works with Gemini. This allows users to quickly ask questions using their voice, with support for 22 languages, including Thai.
The reviewer enthusiastically recommends the Galaxy Watch 9, describing it as a highly capable and interesting device that functions effectively as a personal "assistant doctor." They emphasize its comprehensive health monitoring features as a key benefit for proactive self-care.
60/100 source quality
The Samsung Galaxy Watch 9 is highlighted for its comprehensive health tracking, being the only brand to measure 4 key health pillars: eating, sleeping, exercising, and stress/mind. It features an advanced 7-color BioActive sensor, capable of measuring Carotenoid levels for antioxidant assessment and AGE (Advanced Glycation End-products) which can indicate diabetes risk, similar to hospital methods. The watch also offers detailed running metrics like posture analysis, VO2 Max, and body fat percentage, along with sleep tracking (snoring, sleep apnea) and fall detection. Reviewers praised its bright Super AMOLED screen, durable aluminum body, and Sapphire display, finding it a highly capable health assistant.
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