1. Introduction
Welcome to the UouNeaCo BJ02 Smart Ring user manual. This guide provides essential information for setting up, operating, maintaining, and troubleshooting your smart ring. Please read this manual thoroughly to ensure proper use and to maximize the benefits of your device.
2. Product Overview
The UouNeaCo BJ02 Smart Ring is a sophisticated wearable device designed to monitor various health and fitness metrics. It features sleep tracking, multiple sport modes, 24/7 heart rate monitoring, and is IP68 waterproof. The ring is designed for comfortable wear and provides up to 5-7 days of battery life.
3. Setup
3.1 Unboxing
Upon opening the package, verify that you have received the UouNeaCo BJ02 Smart Ring and its charging cable.
3.2 Charging the Ring
Before first use, fully charge your smart ring. Connect the charging cable to the ring and a compatible USB power source. The charging indicator (if any) will show the charging status. A full charge typically takes approximately 1-2 hours.
3.3 App Installation and Pairing
- Download the Companion App: Search for the official UouNeaCo Smart Ring app on your smartphone's app store (iOS App Store or Google Play Store).
- Create an Account: Open the app and follow the on-screen instructions to create a new user account or log in if you already have one.
- Enable Bluetooth: Ensure Bluetooth is enabled on your smartphone.
- Pair the Ring: Within the app, navigate to the device pairing section. Select the BJ02 Smart Ring from the list of available devices. Follow any additional prompts to complete the pairing process.
3.4 Sizing the Ring
Accurate sizing is crucial for comfortable wear and precise data collection. Use the following method to determine your correct ring size:

Image: Instructions for measuring finger size using a strip of paper and a ruler.
- Cut a Paper Strip: Cut a thin strip of paper, approximately 2mm wide.
- Wrap Around Finger: Wrap the paper strip snugly around the base of the finger where you intend to wear the ring.
- Mark the Overlap: Mark the point where the end of the paper strip overlaps.
- Measure: Use a ruler to measure the length of the paper strip from the starting point to the mark. This measurement is your finger's circumference.
- Consult Size Chart: Refer to the size selection table below to find the corresponding ring size.
| Size | Diameter (Dia) | Perimeter |
|---|---|---|
| 6# | 16.75mm/0.65in | 52.62mm/2.07in |
| 7# | 17.55mm/0.69in | 55.13mm/2.17in |
| 8# | 18.35mm/0.72in | 57.65mm/2.27in |
| 9# | 19.25mm/0.75in | 60.48mm/2.38in |
| 10# | 20mm/0.78in | 62.83mm/2.47in |
| 11# | 20.85mm/0.82in | 65.50mm/2.58in |
| 12# | 21.65mm/0.85in | 68.02mm/2.68in |
| 13# | 22.45mm/0.88in | 70.53mm/2.78in |
4. Operating Instructions
4.1 Wearing the Ring
Wear the BJ02 Smart Ring on any finger that provides a snug yet comfortable fit. Ensure the sensors on the inner side of the ring are in contact with your skin for accurate data collection.
4.2 Data Synchronization
The smart ring automatically collects data throughout the day and night. To view your data, open the companion app on your smartphone. The ring will automatically synchronize data with the app via Bluetooth when the app is open and the ring is within range. Ensure your phone's Bluetooth is active.
4.3 App Navigation
The app provides a dashboard to view your health and fitness metrics. Navigate through different sections to see detailed reports on sleep, activity, heart rate, and other monitored parameters.
5. Features
5.1 Sleep Tracking
The BJ02 Smart Ring monitors your sleep patterns, including sleep stages (light, deep, REM), duration, and quality. Detailed analysis is available in the companion app to help you understand and improve your sleep.
5.2 Multiple Sport Modes and Activity Tracking
The smart ring supports various sport modes, allowing you to track specific activities such as running, cycling, and walking. It records steps, distance, and calorie consumption.

Image: The smart ring app interface showing options for various exercises like running, walking, and cycling, along with daily activity summaries.
5.3 24/7 Health Monitoring
The ring continuously monitors key health indicators throughout the day and night, providing a comprehensive overview of your well-being.

Image: Graphs illustrating 7-day/24-hour monitoring of Heart Rate (HR), Blood Oxygen Saturation (SpO2), and Blood Pressure (BP) data.
Heart Rate Monitoring
The ring automatically collects heart rate data at regular intervals, intelligently identifying abnormal heart rate patterns and other relevant situations.

Image: Visual representation of continuous 24-hour heart rate data collection and analysis.
Blood Oxygen (SpO2) Monitoring
The device tracks your blood oxygen saturation levels, providing insights into your respiratory health.
Blood Pressure (BP) Monitoring
The ring also offers blood pressure monitoring capabilities, contributing to a comprehensive health overview.
5.4 IP68 Waterproof Rating
The BJ02 Smart Ring is rated IP68 waterproof, meaning it is resistant to dust and can withstand immersion in water up to 1.5 meters for up to 30 minutes. This allows for use during hand washing, in the rain, and during swimming activities.

Image: The smart ring demonstrating its 5ATM waterproof capability, suitable for swimming, washing hands, and use in rain.
5.5 Women's Health Tracking
The smart ring includes features specifically designed for women's health, tracking menstrual periods and ovulation cycles. This helps users understand their body's natural rhythms.

Image: The Women's Health feature in the app, showing a calendar view for tracking menstrual periods and ovulation days.
6. Maintenance
6.1 Cleaning
To clean your smart ring, gently wipe it with a soft, damp cloth. Avoid using abrasive materials or harsh chemicals, as these can damage the ring's finish and sensors. Ensure the charging contacts are clean and dry before charging.
6.2 Storage
When not in use, store the ring in a cool, dry place away from direct sunlight and extreme temperatures. Keep it away from sharp objects to prevent scratches.
6.3 Battery Care
To prolong battery life, avoid fully discharging the ring frequently. Charge it regularly, even if not completely depleted. If storing for an extended period, charge the ring to about 50% before storage.
7. Troubleshooting
7.1 Ring Not Syncing Data
- Ensure Bluetooth is enabled on your smartphone.
- Make sure the ring is charged and powered on.
- Open the companion app and ensure it is running in the foreground or background.
- Try restarting your smartphone and the app.
- If issues persist, unpair and re-pair the ring through the app's settings.
7.2 Ring Not Charging
- Check the charging cable for any damage.
- Ensure the charging contacts on both the ring and the cable are clean and free of debris.
- Try a different USB power source or wall adapter.
- Ensure the ring is correctly seated on the charger.
7.3 Inaccurate Data Readings
- Ensure the ring is worn snugly on your finger with the sensors in proper contact with your skin.
- Avoid wearing the ring too loosely or too tightly.
- Ensure your skin is clean and dry where the sensors make contact.
- Calibrate the device if the app provides such an option.
7.4 Ring Not Responding
If the ring becomes unresponsive, try placing it on the charger for a few minutes. If it still does not respond, contact customer support.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | BJ02 |
| Brand | UouNeaCo |
| Connectivity Technology | Bluetooth |
| Wireless Communication Standard | Bluetooth |
| Battery Type | Lithium-polymer |
| Battery Capacity | 18 Watthours |
| Average Battery Life | 168 hours (7 days) |
| International Protection Rating | IP68 (Waterproof) |
| Memory Storage Capacity | 3 MB |
| Operating System | Wear OS 1.1 |
| Item Weight | 3 Grams |
| Target Audience | Adults, Unisex |
| GPS Functionality | No GPS |
| Display Type | No Display |
| Compatible Devices | Smartphone |
9. Warranty and Support
9.1 Warranty Information
The UouNeaCo BJ02 Smart Ring comes with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging or visit the official UouNeaCo website for detailed warranty terms and conditions.
9.2 Customer Support
For technical assistance, troubleshooting, or any product-related inquiries, please contact UouNeaCo customer support. Contact details can typically be found on the official website or in your product documentation.


