Samsung wearable model SM-R390 received FCC certification in September 2023 under FCC ID ZCASMR390. The filing did not name the product Galaxy Fit3 or provide a complete specification sheet, but its Bluetooth Low Energy testing and rectangular schematics pointed to a successor to the Galaxy Fit2. Later Bluetooth SIG evidence identified SM-R390 as the Galaxy Fit3, and Samsung released the band in February 2024, with timing varying by market.
What the FCC certification actually confirmed
The certification record described SM-R390 only as a Samsung wearable device. A certification database records the approval on September 26, 2023, while the associated Bluetooth Low Energy test report was issued September 11, 2023. That report lists hardware revision 1.0 and software version R390XXU0AWHG. The FCC-related record is available at device.report, and the test report is available at fcc.report.
The filing therefore established a real Samsung wearable undergoing radio-compliance testing, not a retail announcement. FCC approval is a regulatory milestone for the tested radio equipment; it does not establish a price, launch date, final name, or every feature.
Evidence visible in the schematics
- A wider, rectangular body rather than the narrow shape associated with the Galaxy Fit2.
- Rear optical heart-rate hardware.
- Two rear charging contacts, consistent with spring-pin or pogo-pin charging.
- A side button or control area.
- A conventional removable-band arrangement.
The drawings offered a useful outline, but they were not proof of the final industrial design, display dimensions, charger design, or battery capacity.
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- Vibrant 1.6” AMOLED Display – Large, high-res screen with smooth touch for easy navigation
- 5ATM & IP68 Water Resistance – Swim-ready and dust-resistant for active lifestyles
- Up to 14 Days Battery Life – Powerful 208mAh battery for long-lasting performance
- 101+ Workout Modes with Auto Detection – Automatically tracks common workouts for seamless fitness tracking. Advanced Health Tracking – Includes sleep coaching, SpO2, heart rate, and snore detection
- International Model No Warranty in the US. ONLY compatible with Android devices. Samsung Pay - Not Supported. NOT compatible with iPhone or iOS devices.
Why the device was linked to the Galaxy Fit3
Contemporary reports inferred a Fit-series successor from the SM-R390 model number, the wearable classification, and the shape shown in the filing. The model did not fit Samsung’s Galaxy Watch naming pattern. However, the initial FCC material itself did not call it “Galaxy Fit3.” That retail identity was reinforced later when a Bluetooth SIG listing associated SM-R390 with the Galaxy Fit3 name and Bluetooth 5.3. The later Bluetooth report is covered by Android Authority.
How the design changed from Galaxy Fit2
The Galaxy Fit2 launched in 2020 with a slim, narrow-band format. FCC drawings for SM-R390 suggested a squarer, broader body, and leaked renders later showed a larger display in that general direction. Those renders were leak material, not Samsung confirmation; contemporary coverage can be found at Android Headlines and Android Central.
Rank #2
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- Vibrant 1.6” AMOLED Display – Large, high-res screen with smooth touch for easy navigation
- 5ATM & IP68 Water Resistance – Swim-ready and dust-resistant for active lifestyles
- Up to 14 Days Battery Life – Powerful 208mAh battery for long-lasting performance
- 101+ Workout Modes with Auto Detection – Automatically tracks common workouts for seamless fitness tracking. Advanced Health Tracking – Includes sleep coaching, SpO2, heart rate, and snore detection
- International Model No Warranty in the US. ONLY compatible with Android devices. Samsung Pay - Not Supported. NOT compatible with iPhone or iOS devices.
Samsung’s finished product used an aluminum body and a 1.6-inch AMOLED display. That screen size came from Samsung’s final specifications, not the FCC filing.
Details that arrived after the FCC filing
| Item | What was established | Evidence and qualification |
|---|---|---|
| Bluetooth | Bluetooth 5.3 | Later Bluetooth SIG-related reporting, not the original FCC summary. |
| Display | 1.6-inch AMOLED | Samsung final product specification. |
| Battery | 208mAh | Samsung U.S. support specification. |
| Battery estimate | Up to 13 days with Always-On Display off; up to 3.5 days with it on | Samsung estimates under stated usage and test conditions. |
| Memory | 16MB RAM and 256MB storage | Samsung support specification. |
| Sensors | Accelerometer, gyroscope, optical heart-rate, barometer and light sensor | Samsung support specification. |
| Durability | IP68 | Use this rating precisely; it is not the same claim as a 5 ATM water-resistance rating. |
Samsung’s regional product page gives the display and battery-use qualification at Samsung Latin America, while the detailed support specifications are at Samsung U.S. support.
Rank #3
- Galaxy Watch3 combines powerful technology with a premium, customizable design so you can manage the day-today from your wrist, beautifully.
- Keep an eye on wellness with advanced health monitoring, and go for days without charging.
- Keep an eye on your fitness and health with SpO2, VO2 max, and heart-rate monitoring. Help is just a tap away if you stumble. And track your cycle in an easy and discreet way. *This device and related software are not intended for use in the diagnosis of disease or other conditions, or in the cure, mitigation, treatment or prevention of disease. SPO2, VO2 max and running coach features not available at the time of launch, will become available during Q3. Features will require a software update.
- Galaxy Watch3 combines style—two sizes, three colors, 50,000-plus watch faces and premium leather bands—with military-grade durability and water resistance.
- Spend your time moving while Galaxy Watch3 tracks seven popular activities automatically. Get more out of each movement thanks to a built-in run coaching.
What Samsung ultimately confirmed
Samsung announced the Galaxy Fit3 with sleep and health tracking, more than 100 workout modes or exercise-tracking support depending on regional wording, fall detection, SOS-related functions, notifications and media controls when paired with a phone. The announcement is documented at Samsung Newsroom Philippines.
The advertised “up to 13 days” is not a universal runtime guarantee. Samsung describes an internal typical-use scenario involving notifications, text checks, time checks, workouts and a paired Galaxy smartphone, with Always-On Display disabled. Frequent workouts, high brightness, continuous sensing, many notifications or Always-On Display can reduce runtime substantially.
Rank #4
- Activity Tracker: The fitness tracker supports four exercise modes, including running, walking, cycling and skipping rope. Enabling you to accurately track daily steps, calories burned and distance traveled. Perfect for achieving your fitness goals and optimal fitness results.
- Heart Rate/Sleep Monitor: Equipped with advanced sensors, the fitness tracker continuously monitors your heart rate and sleep quality, providing more comprehensive data to help you maintain a healthy lifestyle.
- Notifications: Stay connected on the go with smart notifications for calls, SMS, and app alerts. You won’t miss any important messages or reminders while focusing on your activities or work.
- Convenient Daily Features: Comes with a range of practical features, including weather forecasts, stopwatch, sedentary reminders, alarm clock, wrist-raise display, Do Not Disturb mode, remote camera control, and adjustable screen brightness and display time, all designed to enhance your daily convenience.
- Long Battery Life: Enjoy the long-lasting battery that requires just 2 hours of charging for up to 5 days of use, with a standby time of up to 20 days. Just connect it to any USB port without the need for a special charger, making charging convenient and hassle-free.
Phone compatibility and connected functions
The Fit3 is Android-only; Samsung does not support iPhone pairing. When connected to a compatible Android phone, it can handle notifications, media controls, mode synchronization, fall detection and emergency-related functions. Regional phone requirements and feature availability can vary.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What the Fit3 does not offer
The FCC material confirmed Bluetooth-related testing but did not prove the presence or absence of GPS, NFC or cellular radios. Samsung’s final listed sensor set does not include a GPS sensor, and its specifications do not list NFC or cellular connectivity. The safest description is that the Fit3 is a Bluetooth-connected fitness band that appears to rely on a paired phone for connected functions, including location-assisted workouts. A phone supplying location data is not the same as built-in GPS in the band.
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Best Value
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- Vibrant 1.6” AMOLED Display – Large, high-res screen with smooth touch for easy navigation
- 5ATM & IP68 Water Resistance – Swim-ready and dust-resistant for active lifestyles
- Up to 14 Days Battery Life – Powerful 208mAh battery for long-lasting performance
- 101+ Workout Modes with Auto Detection – Automatically tracks common workouts for seamless fitness tracking. Advanced Health Tracking – Includes sleep coaching, SpO2, heart rate, and snore detection
- International Model No Warranty in the US. ONLY compatible with Android devices. Samsung Pay - Not Supported. NOT compatible with iPhone or iOS devices.
It also lacks several Galaxy Watch-level capabilities:
- No Wear OS app ecosystem.
- No ECG.
- No body-composition measurement.
- No listed standalone GPS.
- No cellular calling service.
Heart-rate, blood-oxygen, sleep and stress measurements should be treated as wellness features, not medical diagnoses.
Release timing and regional availability
Samsung announced the Galaxy Fit3 on February 7, 2024. Samsung materials cite availability beginning February 23 in one announcement, while another regional announcement records February 22. The product therefore launched in February 2024, with the exact date depending on market; see Samsung Japan for regional context. Colors, stock, warranty terms, prices and sales channels also vary by country. An FCC approval should never be read as proof that retail stock was immediately available.
Galaxy Fit3 versus a Galaxy Watch
| Choose the Fit3 when you prioritize | Choose a Galaxy Watch or another full smartwatch when you need |
|---|---|
| Light weight, simple notifications and long stated battery life | A broader app platform and richer smartwatch functions |
| Basic activity, sleep, heart-rate, stress and blood-oxygen tracking | ECG, body-composition analysis or more advanced health hardware |
| Phone-connected workouts and emergency features | Standalone location, cellular service or more independent operation |
| A deliberately limited fitness band rather than a watch | Wear OS applications and a more capable fitness computer |
The Fit3 is a sensible match for Android users who want a lightweight tracker and do not need a smartwatch platform. It is a poor match for iPhone owners, serious runners or cyclists who require built-in GPS, and anyone expecting Galaxy Watch health or app features in a smaller body. Samsung’s official product page is here; check the relevant country page for current stock and terms.
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1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteThe retrospective verdict on the FCC story
The FCC filing was valuable but narrow. It accurately exposed SM-R390, its BLE testing and a new rectangular hardware outline with heart-rate hardware and charging contacts. It did not independently reveal the Galaxy Fit3 name, 1.6-inch display, 208mAh battery, 13-day estimate, GPS status or launch date. Later Bluetooth evidence and Samsung’s final announcement filled in those gaps. In retrospect, the filing identified the direction of Samsung’s next fitness band without serving as its complete specification sheet.
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