Samsung Galaxy Fit 3 Fitness Tracker 40mm
- Battery Average Life: 13 days
- Gps Geotagging Functionality: No GPS
- Supported Satellite Navigation System: GPS
- Water Resistance Depth: 4.9 feet
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A lightweight Samsung fitness tracker at 50 grams, worth checking Samsung's own spec sheet for battery and sensor details before buying.
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ASIN: B0CTCLBST5Model: SM-R390NCategory: Fitness Trackers
Overview
The Samsung SM-R390N is a fitness tracker weighing 50 grams in a black finish, built for on-wrist activity tracking. Beyond the weight and color, the listing doesn't detail battery life, screen type, or sensor specs.
At 50 grams the tracker sits on the lighter end for wearables, which matters for all-day and overnight wear. Model number SM-R390N is the main identifier here since the listing doesn't include feature specifics like heart rate or sleep tracking.
- 50 gram weight
- Black finish
- Model SM-R390N
- Wrist-worn fitness tracker
Who it's for
Suits anyone wanting a lightweight fitness tracker for daily wear. Not useful if you need confirmed specs like battery life or specific sensors before buying, since those aren't listed.
Pros and cons
- Light at 50 grams for all-day wear
- Battery life, sensors, and display specs not listed here
Performance notes
The main data point available is weight, and at 50 grams the SM-R390N is light enough for continuous wear without noticeable bulk on the wrist. Sensor, battery, and display details aren't part of this listing, so pull those from Samsung's official specs if they factor into your decision.
Where it stands among fitness trackers
- 13 days battery average life: longer than 73% of the fitness trackers we list.
From the specs of the 43 fitness trackers we list; not a test result.
Specifications
| Brand | Samsung |
|---|---|
| Model | SM-R390N |
| Dimensions & fit | |
| Water Resistance Depth | 4.9 feet |
| Screen Size | 1.6 incheshigher than 69% of 30 fitness trackers |
| Item Weight | 0.11 poundslower than 52% of 22 fitness trackers |
| Band Length | 8.3 inches |
| Item Dimensions | 1.8 × 0.7 × 0.4 inches |
| Sim Card Size | eSIM |
| Capacity & performance | |
| Battery Capacity | 208 mAhlower than 52% of 28 fitness trackers |
| Memory Storage Capacity | 0.016 GBlower than 85% of 27 fitness trackers |
| Age Range Description | Adult |
| Power & efficiency | |
| Battery Average Life | 13 dayshigher than 73% of 27 fitness trackers |
| Battery Cell Type | Other Than Listed |
| Construction & materials | |
| Band Material Type | Silicone |
| Case Material Type | Aluminum |
| Color | Black |
| Band Color | Gray |
| Compatibility & installation | |
| Compatible Phone Models | Compatible with iOS and Android devices |
| Connectivity Technology | Bluetooth |
| Human Interface Input | Buttons |
| Compatible Devices | Smartphone, Tablet |
| Ram Memory Installed | 0.016 GB |
| Included components | |
| Unit Count | 1 |
| Warranty & support | |
| Supported Satellite Navigation System | GPS |
| Warranty Type | Limited |
| Supported Application | Fitness Tracker, Sleep Monitor |
| Other details | |
| Gps Geotagging Functionality | No GPS |
| Waterproof Rating | IP68 |
| Water Resistance Level | Water Resistant |
| Operating System | Android Wear |
| Wearable Computer Type | Activity Tracker |
| Display Type | Digital |
| Resolution | 320 x 320 |
| Communication Feature | Bluetooth |
| Control Type | Touch |
| Closure Type | Buckle |
| Clasp Type | Buckle |
| Shape | Rectangular |
| Wireless Provider | Unlocked |
| Sport Type | Multi-Sports |
| Additional Features | Sleep Monitor, Time Display |
| Builtin Media | Fit, Charging Cable And Quick Start Guide |
| Wireless Compability | Bluetooth |
| Metrics Measured | Sleep Duration, Blood Oxygen Monitor |
| Style Name | Modern |
| Target Audience | Unisex Adults |
Closest rivals on specs
Zeacool Fitness Tracker Smart Watch IP68- Battery Capacity 208 vs 180 mAh (+16%)
WHOOP 5.0 MG Activity Tracker- Item Weight 0.11 vs 0.16 pounds (-31%)
XIAOMI Smart Band 10 Fitness Watch M2457B1- Memory Storage Capacity 0.02 vs 0.06 GB (-75%)
- Battery Capacity 208 vs 233 mAh (-11%)
- Item Weight 0.11 vs 0.04 pounds (+175%)
Frequently asked questions
How much does the Samsung SM-R390N weigh?
50 grams.
What color is the Samsung SM-R390N fitness tracker?
Black.
Does the listing include battery life for the SM-R390N?
No, battery life and sensor details aren't specified in the available data.