1. Introduction
This product is designed for measuring, displaying, and storing pulse oxygen saturation (SpO2) and pulse rate. It is intended for sports and aviation use only and is not a medical device. It is not intended for medical diagnosis or treatment.
Important Safety Information
- Consult your physician before using this device if you have any medical conditions.
- Do not use this device during MRI or CT scans.
- Do not use this device in an environment with flammable anesthetics.
- Do not use this device on the same limb as a blood pressure cuff or other monitoring equipment.
- This device is not intended for continuous monitoring.
- Do not use this device on infants or children.
- The device may not work correctly if the finger is too cold, too thin, or has nail polish.
2. Product Overview
Device Components

The Wearpulse Checkme O2 Max Smart Wrist Pulse Oximeter consists of a main unit worn on the wrist and a ring sensor placed on a finger.

The comfortable ring sensor ensures stable readings and prevents discomfort during extended wear.
Display Information
The device's display shows the following information:
- SpO2 value (Blood Oxygen Saturation)
- PR value (Pulse Rate)
- Battery indicator
- Bluetooth connection status
- Time
3. Setup
3.1 Charging the Device
Before first use, fully charge the device. Connect the charging cable to the device's charging interface and plug the other end into a USB power adapter (not included) or a computer's USB port. A full charge provides up to 72 hours of use.
3.2 App Installation (ViHealth App)
For enhanced functionality and data management, download the ViHealth app. The app is compatible with iOS and Android devices.
- For iOS: Search for "ViHealth" in the Apple App Store.
- For Android: Search for "ViHealth" in the Google Play Store.

The ViHealth app allows for multi-user management, setting reminder thresholds, and viewing detailed reports.
4. Operating Instructions
4.1 Wearing the Device
Place the main unit on your wrist and secure it comfortably. Attach the ring sensor to your finger. Ensure the sensor is snug but not too tight to avoid discomfort or restricted blood flow.
4.2 Power ON/OFF
- To Power ON: Press the power button for approximately 1 second.
- To Power OFF: Press and hold the power button for approximately 3 seconds.
4.3 Starting and Stopping Recording
Once the device is powered on and worn correctly, press the power button for 1 second to start recording. The device will begin to display real-time SpO2 and pulse rate readings. To stop recording, press the power button for 1 second again.
4.4 Syncing Data with the App
Ensure Bluetooth is enabled on your smartphone and the ViHealth app is open. The device will automatically connect to the app and sync recorded data. You can view real-time data and historical reports within the app.

Real-time data and historical trends are visible in the ViHealth app.

The device provides accurate monitoring of oxygen levels and pulse rate, displayed with clear graphs.

Reports generated by the ViHealth app can be easily shared.
5. Maintenance
5.1 Cleaning
Clean the device and sensor regularly with a soft cloth dampened with a mild disinfectant (e.g., 70% isopropyl alcohol). Do not immerse the device in liquid. Ensure the device is dry before storage or next use.
5.2 Storage
Store the device in a cool, dry place away from direct sunlight and extreme temperatures. If not used for an extended period, charge the device at least once every 3 months to maintain battery health.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low battery | Charge the device fully. |
| Inaccurate readings | Improper sensor placement, movement, or cold finger | Ensure the sensor is correctly placed and stable. Warm your finger if it's cold. Avoid excessive movement during measurement. |
| Cannot connect to ViHealth app | Bluetooth is off, app not running, or device out of range | Ensure Bluetooth is enabled on your phone. Open the ViHealth app. Bring the device closer to your phone. |
| No data sync to app | Device not connected to app, or app not open | Ensure the device is connected to the ViHealth app and the app is running in the foreground. |
7. Specifications
| Feature | Specification |
|---|---|
| Measuring Range (SpO2) | 70-100% |
| Measuring Range (Pulse Rate) | 40-240 bpm |
| Battery Life | Up to 72 hours |
| Power Supply | Built-in rechargeable battery |
| Connectivity | Bluetooth |
| App Compatibility | iOS & Android (ViHealth App) |
| Color | Grey |
8. Warranty and Support
For warranty information or technical support, please contact Wearpulse customer service. Refer to the product packaging or the official Wearpulse website for contact details.
This device is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.