1. Product Overview
The Comfytemp Cordless Knee Massager with Heat is designed to provide soothing warmth and targeted vibration massage for knee pain relief, stiffness, coldness, strain, and arthritis. Its 3D-modeled ergonomic design ensures a comfortable and secure fit with adjustable straps. The device offers dual control via physical buttons and a dedicated mobile application, providing flexibility and convenience.
Key Features:
- Comfortable Snug Fit: 3D-modeled ergonomic design with adjustable straps and extension belts for a secure and customizable fit.
- Effective Heat Therapy: Provides soothing warmth with 9 adjustable heat levels.
- Focal Vibration Massage: Offers 5 vibration modes with 3 intensity levels for targeted relief. Vibration can be switched off separately.
- Wireless and Portable: Rechargeable battery provides up to 240 minutes of use (60 minutes on highest setting) and features a 15-minute auto shut-off.
- Dual Control Systems: Control heat and vibration settings via the device's buttons or a mobile application.
Product Images:

The Comfytemp Cordless Knee Massager in use, illustrating its application on the knee with visual cues for heat and vibration.

Visual representation of the massager's key features: 9 heating levels, 5 vibration modes, 3 vibration intensity levels, and a 15-minute auto-off timer.

A user comfortably relaxing while wearing the cordless knee massager, emphasizing its portability and freedom from wires.

The 3D molded knee design is shown on a user, with insets detailing the perfect fit, 3D surround, and adjustable strap for comfortable wear.

Collage of images depicting individuals with knee pain, illustrating the product's purpose for targeted knee pain relief and faster recovery.

Demonstration of the dual control system, showing both the physical buttons on the device and the mobile application interface for adjusting settings.

Detailed view of the rechargeable battery feature, highlighting its long usage time and convenient Type-C charging port.

A comparison graphic showcasing the upgraded features of the Comfytemp Cordless Knee Massager versus other models, emphasizing its superior design and functionality.
2. Setup
2.1 Charging the Device
Before first use, fully charge the device. The massager comes with a USB to USB-C charging cable. It takes approximately 2 hours to fully charge. You can connect the USB end to a wall adapter, power bank, or laptop USB port.
2.2 Adjusting the Fit
The knee massager features adjustable elastic bands with Velcro closures to ensure a comfortable and secure fit for various knee sizes. If a larger size is needed, the product includes extenders that can be attached to the straps for additional length.
2.3 App Installation and Pairing
To utilize the app control features, download the Comfytemp app from your device's app store. Once installed, open the app and follow the on-screen prompts to add your device. Ensure your device's Bluetooth is enabled to allow the app to locate and pair with the knee massager. The app allows for remote control of settings and modes.
3. Operating Instructions
3.1 Powering On/Off
To power on the device, press the power button located in the center of the display. The large screen will illuminate, showing the current settings. To power off, quick press the power button again.
3.2 Adjusting Heat Settings
The device offers 9 different heat settings. Use the dedicated heat button (often indicated by a flame icon) to cycle through the available heat levels. Always ensure the massager is worn over clothing when using heat therapy.
3.3 Adjusting Vibration Settings
The massager provides 5 vibration modes. Press the vibration button (often indicated by a wavy lines icon) to cycle through these modes. Additionally, there are 3 intensity levels for the vibration. To change the intensity, long press the vibration button. You can also switch off the vibration feature independently if desired.
3.4 Using App Control
Once paired, the Comfytemp app provides comprehensive control over the device. You can select vibrating modes (Mode 1-5), adjust temperature levels (0-9), and set the countdown timer (default 15 minutes). The app offers greater visibility and convenience for customizing your therapy experience.
3.5 Auto Shut-off Feature
For safety and energy conservation, the device features a 15-minute auto shut-off function. After 15 minutes of continuous operation, the massager will automatically turn off.
4. Maintenance
4.1 Cleaning
To clean the knee massager, gently wipe the fabric and control unit with a damp cloth. Do not submerge the device in water or use harsh chemical cleaners. Ensure the device is completely dry before storing or recharging.
4.2 Storage
Store the device in a cool, dry place away from direct sunlight and extreme temperatures. Keep it out of reach of children.
5. Troubleshooting
5.1 Device Not Turning On
- Ensure the device is fully charged. Connect it to a power source using the provided USB-C cable.
- Verify that the power button is pressed firmly and held for a few seconds if necessary.
5.2 No Heat or Vibration
- Check the display to ensure heat and/or vibration settings are activated and set to a desired level.
- Ensure the device has sufficient battery charge.
- If using the app, verify that the device is properly connected via Bluetooth and settings are applied.
5.3 App Connectivity Issues
- Ensure Bluetooth is enabled on your mobile device.
- Make sure the knee massager is powered on and within Bluetooth range.
- Try restarting both the app and the knee massager.
- If issues persist, try unpairing and re-pairing the device in the app settings.
5.4 Discomfort During Use
- Adjust the heat and/or vibration intensity to a lower, more comfortable level.
- Ensure the device is worn over clothing, as direct skin contact with high heat settings may cause discomfort.
- Re-adjust the straps to ensure a snug but not overly tight fit.
For further assistance, please refer to the Warranty & Support section.
6. Specifications
| Feature | Detail |
|---|---|
| Brand | Comfytemp |
| Material | Fabric |
| Number of Heat Settings | 9 |
| Number of Vibration Modes | 5 |
| Vibration Intensity Levels | 3 |
| Voltage | 12 Volts |
| Battery Life (Max) | Up to 240 minutes (60 minutes on highest setting) |
| Auto Shut-off | 15 minutes |
| Control Method | Button & APP Control |
| Package Dimensions | 11.06 x 6.02 x 5.63 inches |
| Item Weight | 1.7 Pounds |
| Manufacturer | Shenzhen Yicai Health Technology Co. , Ltd. |
| ASIN | B0DCJ56TCH |
7. Safety Information
- Always use on the lowest heat setting and do not exceed 15 minutes of use at a time.
- Keep away from children and do not use while sleeping.
- Do not use if you have a skin condition, are pregnant, or have a pacemaker.
- Always follow electrical safety guidelines when charging the device.
Indications for Use:
This device is indicated for the temporary relief of knee pain, stiffness, coldness, strain, and arthritis.
8. Warranty & Support
Comfytemp is committed to providing high-quality products and customer satisfaction. Your Comfytemp Cordless Knee Massager comes with the following:
- 365 Days Warranty: Enjoy peace of mind with a full year of warranty coverage.
- 30 Days Free Return: If you are not satisfied, you may return the product within 30 days for free.
- 24 Hrs Quick Customer Support: Dedicated customer support is available to assist you with any inquiries or issues.
For support, please contact Comfytemp US, the seller, directly through the platform where you purchased the product.





