3R TABLET B3 Smart Bracelet — Health Tracker
Compact health band with 24/7 HR, SpO₂, HRV stress, sleep stages and 12 sport modes. Comfortable and lightweight.
Introduction
Modern life demands that we stay connected, active, and mindful of our health — often simultaneously. The 3R TABLET B3 Smart Bracelet steps in as a compact wrist companion designed to address that juggling act: continuous heart-rate and SpO₂ monitoring, stress assessment through HRV, sleep-stage mapping, and reliable step and activity tracking. It aims to turn scattered health signals into clear, actionable insights so you can prioritize fitness, recovery, and focus without being tethered to complicated hardware.
For people balancing workouts, office demands, and personal wellbeing, the B3 reduces friction. With a single-touch interface and a lightweight silicone strap, it puts essential metrics on your wrist and syncs to a companion app for deeper analysis. Whether you want to know when stress is spiking mid-meeting, confirm your sleep quality after a long travel day, or record a training session without fuss, this bracelet packages daily health monitoring into a minimalist, wearable that fits into any routine.
Overview
The B3 Smart Bracelet is a focused health wearable that trades flashy extras for consistently tracked data. Built with high-precision optical sensors, it offers 24/7 heart rate monitoring, on-demand SpO₂ checks, and HRV-based stress assessments. Sleep tracking differentiates light, deep, REM, and awake phases to produce a daily sleep score, while activity tracking covers steps and 12 sport modes for targeted workout logging. A single-touch small screen shows core metrics at a glance, and the device communicates with a dedicated mobile app for long-term trend analysis.
Design-wise the B3 favors comfort and discretion: a soft silicone strap and a slim body keep the bracelet comfortable for continuous wear, including sleep. Its aesthetic is understated and practical — a light gray finish that aligns with both casual and professional wardrobes. Compatibility is wide-ranging thanks to Bluetooth pairing and a supporting iOS/Android app; the bracelet handles call reminders, remote shutter control for photos, and delivers simple, glanceable health insights without overwhelming the user interface.
Features
24/7 Heart Rate & SpO₂ Monitoring (Continuous Health Tracking): The B3 is equipped with continuous heart-rate monitoring and one-tap blood oxygen (SpO₂) measurement backed by high-precision optical sensors. Advantage: Constant data capture lets the bracelet detect trends and anomalies rather than relying on single-point readings. Benefit: You get early awareness of changes in cardiovascular status and oxygen saturation, enabling timely decisions — from adjusting workout intensity to seeking medical advice if values are out of range.
HRV-Based Stress Analysis & Smart Alerts (Proactive Wellness): Heart rate variability (HRV) is analyzed to assess stress levels and the device issues timely reminders and insights. Advantage: Built-in stress metrics give context to spikes in heart rate, helping separate exertion from emotional or physiological stressors. Benefit: This turns vague feelings of overwhelm into measurable events you can address — take a breathing break, adjust workload, or follow an app-guided relaxation routine to protect long-term wellbeing.
Comprehensive Sleep Monitoring with Stage Detection (Sleep Optimization): The sleep module identifies light sleep, deep sleep, REM, and wakefulness and produces a daily sleep score based on duration, deep-sleep ratio, and awakenings. Advantage: Categorized sleep stages and a quantified score provide a clear baseline to compare nights and track the impact of habits or schedule changes. Benefit: Users can improve recovery through actionable changes like shifting bedtimes, reducing late-night screen time, or optimizing exercise timing to enhance deep sleep and next-day energy.
12 Sports Modes & Activity Snapshot with Dedicated App (Fitness Tracking & History): The B3 supports 12 sport profiles and automatic step counting, syncing workout history to a companion app for long-term trend review. Advantage: Mode-specific metrics ensure more relevant data capture (e.g., different cadence or intensity metrics for running vs. cycling). Benefit: Training becomes smarter and goal-oriented — monitor progress, avoid plateaus, and maintain motivation by reviewing clear workout logs and performance improvements over weeks and months.
Benefits
Improve Daily Health Awareness
Continuous heart-rate and SpO₂ monitoring turns abstract health concerns into measurable trends, helping you notice gradual changes that warrant attention before they escalate.
Reduce Stress and Boost Focus
HRV-based stress analysis and timely reminders encourage micro-recovery moments during the day, improving concentration and reducing burnout risk for busy professionals.
Enhance Sleep Quality
Detailed sleep staging and a daily score make it easier to identify patterns and implement small habit changes that meaningfully improve recovery and daytime energy.
Streamline Fitness Progress
12 sports modes plus long-term data in the app convert workouts into actionable feedback, helping you set, adjust, and achieve training goals with confidence.
Stay Connected Without Distraction
Call reminders and a simple vibration alert allow important notifications to come through discreetly, so you can maintain focus without constantly checking your phone.
Usages
Perfect for fitness tracking and goal setting
Use the B3 to log runs, gym sessions, or cycling workouts via dedicated sport modes and review performance metrics in the app to track improvements over time.
Ideal for busy professionals managing notifications
Enable call reminders and use subtle wrist alerts to stay reachable during meetings without interrupting workflow or pulling out your phone frequently.
Excellent for monitoring wellness during travel
Continuous SpO₂ and heart-rate tracking combined with sleep analysis help detect the impact of time zone shifts, altitude changes, or disrupted routines while traveling.
Pros & Cons
Pros
- Lightweight and comfortable for 24/7 wear, including sleep
- Comprehensive health suite: HR, SpO₂, HRV stress, and stage-based sleep analysis
- Tidy, single-touch interface for quick glances and easy interaction
- 12 sport modes and app-driven workout history for progressive training
- Remote camera shutter and call reminders add practical convenience
Cons
- Basic display limits in-watch data visualization compared with larger smartwatches
- Battery uses a user-replaceable ‘1 A’ battery which may require periodic swapping rather than long recharge cycles
- App ecosystem is functional but lacks the mature polish of major brand platforms
- Not positioned as a medical device — readings are best used for lifestyle and fitness guidance
FAQs
Is the bracelet water resistant?
The B3 is designed for daily use and light moisture exposure, such as sweat and hand washing. For intense water activities or prolonged submersion, follow the manufacturer’s guidance in the app or documentation to avoid damage.
How long does the battery last and what type does it use?
The unit ships with 1 A battery included (user-replaceable). Typical real-world usage should yield multiple days of operation depending on measurement frequency; conservative estimates are up to a week with normal daily tracking, but heavy continuous monitoring may require more frequent battery swaps.
Which smartphones are supported by the companion app?
The B3 pairs via Bluetooth with most modern Android and iOS devices. The dedicated app (available for iOS and Android) provides full access to sleep reports, workout history, and settings such as call reminders and photo remote control.
How accurate are heart rate and SpO₂ readings?
The bracelet uses high-precision optical sensors that provide reliable trend data for heart rate, SpO₂, and HRV-based stress assessments. While suitable for daily wellness tracking and fitness insights, readings are not a substitute for clinical-grade medical devices; consult a healthcare professional for diagnosis or medical monitoring.
Product Specifications
| Model Name | B3 Smart Bracelet |
| Color | Light Gray |
| Package Dimensions | 10 x 2.8 x 0.78 inches |
| Item Weight | 0.635 ounces (approx. 18 grams) |
| ASIN | B0FPZXRPW6 |
| Batteries | 1 A battery required (included) |
| Date First Available | September 5, 2025 |
| Manufacturer | 3R TABLET |
| Display | Small single-touch monochrome OLED (compact glanceable UI) |
| Materials | Silicone strap, lightweight polymer case |
| Sensors | Optical heart rate sensor, SpO₂ sensor, accelerometer (step/activity), HRV analysis |
| Health Features | 24/7 heart rate monitoring, on-demand SpO₂, HRV-based stress analysis, sleep stage detection (light/deep/REM/awake) |
| Sports Modes | 12 sport profiles (selectable via app) |
| Connectivity | Bluetooth (for app sync and notifications) |
| Compatibility | iOS and Android (companion app required for full features) |
| Water Resistance | Daily life water resistance (sweat and splash-resistant) — consult product documentation for swim/submersion guidance |
| Additional Features | Call reminders, shake-to-take-photo remote shutter, battery level display |
| Warranty | Manufacturer warranty (typically 12 months) — check vendor for exact coverage |
| Best Sellers Rank | #104,917 in Sports & Outdoors; #361 in Activity & Fitness Trackers; #831 in Electronics & Gadgets |
Ratings
| Technology | 4.4 |
| Comfort | 4.6 |
| Battery Life | 4.0 |
| Sensor Accuracy | 4.1 |
| App Integration | 3.8 |
| Durability | 3.5 |
Recommendation
This bracelet is ideal for fitness enthusiasts, wellness-focused users, and professionals who want continuous, actionable health data without the bulk or cost of a full-featured smartwatch. Choose the B3 if you prioritize lightweight wearability, clear daily health metrics, and simple fitness logging over extensive third-party app ecosystems or advanced smartwatch apps.
Conclusion
The 3R TABLET B3 Smart Bracelet strikes a compelling balance between essential health monitoring and everyday practicality. It offers continuous heart-rate and SpO₂ tracking, HRV-driven stress insights, and stage-based sleep analysis in a comfortable, unobtrusive package. For users focused on improving sleep, managing stress, or tracking fitness progress with minimal fuss, the B3 delivers meaningful, trend-based information that supports better daily choices.
While the hardware and app may not match the depth of high-end smartwatch ecosystems, the B3’s strengths are its focused feature set, lightweight comfort, and reliable sensors that prioritize actionable wellness signals. For modern users wanting a discreet, affordable entry into continuous health tech that complements busy lives, this bracelet is a smart, practical investment.
