1. Introduction
The VODOOL R12 Smart Ring is a sophisticated wearable device designed to enhance your health and fitness tracking experience. Featuring a display screen, touch controls, and wireless charging, it offers comprehensive monitoring of heart rate, blood oxygen, sleep patterns, and daily activity. Its 5 ATM waterproof rating ensures durability for various activities, and innovative gesture control allows for seamless interaction with compatible applications.

2. Safety & Warnings
Please read all instructions carefully before use to ensure safety and prevent damage.
- Children Safety: Keep the device and its cord out of reach of children under 3 years old. Keep the product and accessories (including small parts) out of reach of children under 12 to prevent ingestion or electric shock.
- Charging: Use only original or EU-standard (CE-certified) chargers/data cables to avoid overcharging and short-circuit risks. Keep away from flammables (e.g., bedding, sofas) during charging and ensure ventilation. Stop use immediately if the battery swells or overheats.
- Environment: Do not use in humid environments (e.g., bathrooms, swimming pools) to prevent electric shock from water ingress.
- Operating Conditions: Operating temperature: 0°C-40°C. Avoid direct sunlight, high-temperature exposure, or freezing environments.
- Maintenance: Do not disassemble or modify the product/battery, as this may cause fire/explosion and void the warranty. Disconnect power before cleaning. Wipe with a dry soft cloth; do not use alcohol or corrosive cleaners.
- Wireless Devices: Wireless devices (Wi-Fi/Bluetooth) shall only operate within EU-authorized frequency ranges with compliant transmission power.
- Malfunctions: If abnormal phenomena (e.g., smoke, odor, strange noise) occur, disconnect power immediately and contact the manufacturer/EU Responsible Person; do not repair by yourself.
3. Package Contents
Ensure all items are present in your package:
- 1 x VODOOL R12 Smart Ring
- 1 x Magnetic Charging Cable
- 1 x Charging Case
- 1 x Instruction Manual (this document)

4. Setup Guide
4.1. Choosing Your Ring Size
The VODOOL R12 Smart Ring is available in five sizes (US standards): 8#, 9#, 10#, 11#, and 12#. Refer to the size chart and measurement guide below to find your perfect fit for optimal comfort and accurate tracking.


4.2. Initial Charging
- Before first use, ensure the Smart Ring is fully charged.
- Connect the magnetic charging cable to the charging case, and then place the ring into the charging case.
- Connect the charging cable to an original or EU-standard (CE-certified) charger (230V/50Hz, 1A or less).
- The device will automatically enter charging mode. Disconnect power promptly after full charge (approximately 1 hour) to extend battery life.

4.3. Power On and App Pairing
- Once charged, press the power button (if available, or follow on-screen prompts) to turn on the Smart Ring.
- Download the "Jring" app from your device's app store (compatible with Android 6.0+ and iOS 11.0+).
- Open the Jring app and follow the on-screen prompts to complete initial settings, including Wi-Fi connection and Bluetooth 5.1 pairing with your smartphone.

5. Operating Instructions
5.1. Health and Fitness Monitoring
- Heart Rate & Blood Oxygen: The ring continuously monitors your heart rate and blood oxygen levels. Tap the ring to activate real-time readings and view detailed data in the Jring app.
- Sleep Tracking: Wear the ring during sleep to track sleep duration, deep sleep, shallow sleep, and awake times. Access sleep analysis reports in the app.
- Activity Tracking: The ring tracks your daily steps and can be used in multisport modes. View your activity data and set goals within the Jring app.
5.2. Innovative Gesture Control
The Smart Ring supports innovative gesture control for seamless interaction with compatible applications. For example, you can navigate videos, browse content, and shop without directly touching your phone. Refer to the Jring app guidelines for specific gesture functionalities and supported applications (e.g., for TikTok).
5.3. App Integration
The Jring app integrates with popular health platforms like WeChat and Apple Health, allowing you to synchronize and manage your health data across different services. The app supports multiple languages for a personalized user experience.
6. Maintenance
- Cleaning: Disconnect the ring from its charging case before cleaning. Wipe the ring with a dry, soft cloth. Do not use alcohol, corrosive cleaners, or abrasive materials, as these can damage the finish and internal components.
- Storage: Store the ring in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Resistance: The ring is 5 ATM waterproof, suitable for swimming and showering. However, avoid prolonged submersion in hot water or exposure to high-pressure water jets.
- Battery Care: To prolong battery life, avoid fully discharging the ring frequently. Disconnect from charging once fully charged.
7. Troubleshooting
- Ring not turning on:
- Ensure the ring is fully charged. Place it in the charging case and connect the charging cable to a power source. If it still doesn't turn on, contact support.
- Cannot pair with smartphone:
- Ensure Bluetooth is enabled on your smartphone.
- Make sure the Jring app is installed and updated to the latest version.
- Restart both the ring and your smartphone.
- Ensure the ring is within Bluetooth range of your phone.
- Inaccurate health data readings:
- Ensure the ring is worn snugly on your finger, but not too tight.
- Clean the sensors on the inside of the ring regularly with a dry, soft cloth.
- Avoid extreme movements or vibrations during readings.
- Ensure the app is synchronized and updated.
- Charging issues:
- Verify the magnetic charging cable is properly connected to both the charging case and the power source.
- Ensure the charging case and ring contacts are clean and free of debris.
- Use an original or CE-certified charger with a 1A or less output.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | R12 |
| CPU | Dialog DA14585 |
| Material | Stainless steel |
| Bluetooth Version | Bluetooth 5.1 |
| Battery Capacity | 16 mAh Polymer Lithium Battery (with protection IC) |
| Working Time | Approx. 3-5 days (normal mode), 5-7 days (low power mode) |
| Charging Time | Approx. 1 hour |
| G Sensor | SC7A20 |
| Heart Rate Sensor | HX3918 |
| Charging Cable | Magnetic charging cable (with patch protection IC) |
| Waterproof Level | 5 ATM |
| Charging Requirements | 1A or less |
| Operation Definition | Ring touch |
| Companion App | Jring |
| System Requirements | Android 6.0 or above, iOS 11.0 or above |
| Operating Temperature | 0~45°C |
| Storage Temperature | -10~55°C |
| Working Humidity | 5%~95% (non-condensing) |
| Static Protection | Contact: ± 6KV, Air: ± 10KV |
| Surge Protection | 12V |
| Charging Temperature Protection | 45°C |
| Packaging Size | 92*90*48mm |
| Gross Weight | 143g |
| Available Colors | Black, Gold, Silver |
| Ring Sizes (US) | 8#, 9#, 10#, 11#, 12# |

9. User Tips
- Consistent Wear: For the most accurate health and sleep tracking data, wear your Smart Ring consistently, especially during sleep and physical activities.
- App Synchronization: Regularly synchronize your ring with the Jring app to ensure all your data is saved and analyzed. Keep the app updated for new features and improved performance.
- Battery Longevity: While the ring has a good battery life, avoid letting it completely drain often. Charge it when convenient to maintain battery health over time.
- Sizing for Comfort: If you experience discomfort or inaccurate readings, double-check your ring size using the provided measurement guide. A snug but comfortable fit is crucial.
- Gesture Practice: Take some time to practice the gesture controls with compatible apps to get the most out of this innovative feature.
10. Warranty & Support
For any issues, questions, or warranty claims, please refer to the full user manual PDF for detailed manufacturer contact information. You can access the PDF document here: VODOOL R12 Smart Ring User Manual (PDF).
If you encounter abnormal phenomena (e.g., smoke, odor, strange noise), immediately disconnect power and contact the manufacturer or your point of purchase. Do not attempt to repair the device yourself.





