1. Introduction
This manual provides essential information for the safe and effective use of your ROHVEMJ Cordless Heated Knee Massager. This device combines heat therapy and vibration massage to provide comfort to the knee and surrounding areas. Please read this manual thoroughly before first use and retain it for future reference.

Figure 1: Overview of the ROHVEMJ Cordless Heated Knee Massager's features.
2. Safety Information
To ensure safe operation and prevent injury or damage, please observe the following precautions:
- Always use a cloth or towel between the heating pad and your skin to prevent burns.
- Keep the device away from flammable materials.
- Do not use the device while sleeping or bathing.
- Charge the device on a flat, well-ventilated surface.
- Do not expose the device to excessive heat or moisture.
- Keep the device out of reach of children and pets.
- Avoid prolonged continuous use; stop if you feel discomfort.
- Do Not Use While Charging: Always unplug the device before use.
- Start with the lowest heat setting and adjust as needed.
- Children should not use this product without adult supervision.
3. Product Components
The package includes:
- 1 x Cordless Heated Knee Massager
- 1 x USB Type-C Charging Cable
- 2 x Extension Velcro Straps
- 1 x User Manual
4. Features Overview
- 3 Heating Levels: Provides adjustable heat therapy at approximately 45°C (113°F), 50°C (122°F), and 65°C (149°F).
- 3 Vibration Massage Modes: Offers low, mid, and high intensity vibration for muscle tissue comfort.
- Cordless Operation: Equipped with a built-in 4000mAh battery for portable use.
- User-Friendly Design: Features adjustable straps and extra Velcro straps for a secure and customized fit on various body parts.
- Versatile Application: Can be used on knees, calves, thighs, arms, shoulders, and elbows.

Figure 2: Adjustable heating and vibration modes on the control panel.

Figure 3: Information on the 4000mAh battery and usage duration.
5. Setup & Charging
5.1 Initial Charging
Before first use, fully charge the device. The massager features a built-in 4000mAh battery and charges via a Type-C USB cable.
- Locate the Type-C charging port on the control panel.
- Connect the provided USB Type-C cable to the device and a suitable power source (e.g., USB wall adapter, computer USB port).
- The battery indicator on the display will show charging progress. A full charge typically takes a few hours.
Video 1: Official product video demonstrating the Heated Knee Brace Cordless Heated Knee Massager, including charging and basic operation. (Duration: 0:43)
5.2 Attaching the Massager
The massager is designed with adjustable straps for a secure fit.
- Wrap the massager around the desired area (e.g., knee, shoulder, elbow).
- Secure the straps using the Velcro fasteners. Ensure a snug but comfortable fit that does not restrict circulation.
- If needed, use the included extension straps for a larger fit.
6. Operating the Massager
The control panel allows you to adjust heat and vibration settings.

Figure 4: Detailed view of the control panel and its functions.
6.1 Power On/Off and Anti-Mistouch Mode
- To power on, press and hold the Power/Anti-mistouch Button for a few seconds until the display illuminates.
- To activate the anti-mistouch mode, short press the Power/Anti-mistouch Button. This locks the controls to prevent accidental changes during use.
- To power off, press and hold the Power/Anti-mistouch Button again for a few seconds.
6.2 Adjusting Heat Levels
The device offers three heat settings:
- Low: Approximately 45°C (113°F)
- Medium: Approximately 50°C (122°F)
- High: Approximately 65°C (149°F)
Press the Heating Button to cycle through the heat levels. The corresponding indicator light on the display will show the selected level (L, M, H).
6.3 Adjusting Vibration Modes
The device offers three vibration modes:
- Low
- Medium
- High
Press the Vibration Button to cycle through the vibration modes. The corresponding indicator light on the display will show the selected mode.
Video 2: Official product video detailing the features and operation of the heating and massager knee pad. (Duration: 1:04)
7. Application Areas
The versatile design of the ROHVEMJ Cordless Heated Knee Massager allows it to be used on various body parts for targeted comfort:
- Knees: For general knee comfort and muscle relaxation.
- Shoulders: Can be adapted for shoulder use with the extension straps.
- Elbows: Can be adapted for elbow use.
- Calves and Thighs: Also suitable for use on leg muscles.

Figure 5: The massager can be used on multiple body parts.
8. Care & Maintenance
- Cleaning: Wipe the device with a soft, damp cloth. Do not immerse in water or use harsh cleaning agents.
- Storage: Store the massager in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge regularly, even if not in use for extended periods.
9. Troubleshooting
If you encounter any issues, please refer to the following common solutions:
- Device not turning on: Ensure the device is fully charged. Press and hold the Power button for a few seconds.
- No heat/vibration: Check if the respective heat/vibration mode is activated on the control panel. Ensure the device is not in anti-mistouch mode.
- Poor fit: Adjust the Velcro straps for a snug fit. Utilize the included extension straps if necessary.
- Charging issues: Ensure the USB Type-C cable is securely connected to both the device and the power source. Try a different charging cable or adapter.
For persistent issues not covered here, please contact customer support.
10. Specifications
| Feature | Detail |
|---|---|
| Model Number | 102259 |
| Brand Name | ROHVEMJ |
| Material Type | Neoprene |
| Color | Black |
| Item Weight | 300 Grams (10.58 ounces) |
| Package Dimensions | 7.01 x 5.12 x 3.31 inches |
| Batteries | 1 Nonstandard Battery required (included) |
| Battery Capacity | 4000mAh |
| Number of Heating Elements | 6 |
| Number of Settings | 6 (3 Heat, 3 Vibration) |
| UPC | 743456288669 |
| Date First Available | November 29, 2024 |
11. Warranty & Support
11.1 Manufacturer Warranty
The ROHVEMJ Cordless Heated Knee Massager comes with a 2-Year Warranty. This warranty covers free replacement for any quality issues that may arise within the warranty period.
11.2 Customer Support
If you have any questions, concerns, or require assistance with your product, please contact ROHVEMJ customer support through the retailer's platform or the contact information provided with your purchase. Please have your model number (102259) and purchase date ready when contacting support.