1. Introduction
This manual provides essential information for the safe and effective use of your YIYIOOTH Back Massager Belt Cordless. This device combines red light therapy, vibration massage, and heat functions to provide targeted relief and relaxation. Please read all instructions carefully before use and retain this manual for future reference.
2. Safety Information
To ensure safe operation and prevent injury or damage to the device, please adhere to the following guidelines:
- Do not use the massager for more than 15 minutes at a time to prevent potential skin irritation or burns.
- Keep the massager away from water and other liquids to prevent electrical hazards and device damage.
- Do not use the massager if you have any medical conditions, are pregnant, or have sensitive skin without consulting a doctor first.
- Ensure the device is turned off and stored in a cool, dry place after each use.
- Do not operate the device while it is charging.
3. Product Features
- 5 Heat Levels + 110pcs Red Light: Provides targeted heat relief with 5 adjustable levels (38°C, 40°C, 42°C, 45°C, 48°C) and 110 enhanced light beads for deep muscle relaxation and improved circulation.
- Vibration Massage: Features 3 vibration modes and 3 intensity levels, delivered by 4 powerful motors for personalized soothing effects across the back and lumbar points.
- 5000mAh Long-Lasting Battery: Equipped with a high-capacity battery for extended cordless use.
- Magnetic Controller: Uniquely designed with a detachable magnetic controller for convenience and ease of use. The LED touch screen provides clear display and control.
- Mesh Breathable Design: Upgraded mesh material enhances comfort and breathability, preventing heat buildup during use.
- Universal Size: Fits waist circumferences from 27 to 50 inches, suitable for a wide range of users.

Figure 1: YIYIOOTH Back Massager Belt with detachable controller and included accessories.

Figure 2: Illustration of the 5 adjustable heat levels and 110 red light beads for targeted therapy.

Figure 3: Visual representation of the 3 vibration intensities, 3 modes (Kneading, Shiatsu, Powerful), and 4 massage motors.
4. Setup
- Charge the Device: Before first use, fully charge the magnetic controller using the provided Type-C charging cable. The battery indicator on the LED screen will show charging status.
- Attach Controller: Securely attach the magnetic controller to the designated area on the massager belt. Ensure the five magnetic points align for proper connection.
- Adjust Belt Size: If needed, use the included extension belt to achieve a comfortable and secure fit around your waist (suitable for 27-50 inches).
5. Operating Instructions
- Wear the Belt: Position the massager belt around your lower back or desired area, ensuring a snug fit for optimal contact with the massage and heating elements.
- Power On: Long press the power button on the magnetic controller to turn on the device. The LED screen will illuminate.
- Adjust Heat Level: Short press the temperature adjustment button (indicated by a flame icon) to cycle through the 5 heat levels (38°C, 40°C, 42°C, 45°C, 48°C).
- Select Vibration Mode: Long press the vibration button (indicated by wavy lines) to choose from 3 vibration frequency modes (M1-Kneading, M2-Shiatsu, M3-Powerful).
- Adjust Vibration Intensity: Short press the vibration button to adjust the intensity level (L1-Low, L2-Medium, L3-High) within the selected mode.
- Lock Screen: Short press the power button to lock the screen and prevent accidental changes during use.
- Automatic Shut-off: The device is designed to automatically shut off after 15 minutes of continuous use for safety. To continue use, simply restart the device. Note: The device does not retain previous settings after automatic shut-off.
- Power Off: Long press the power button to turn off the device after use.

Figure 4: Visual guide for operating the massager belt, including power, temperature, and vibration controls.
Video 1: This video demonstrates the features and benefits of the YIYIOOTH Back Massager Belt, including its cordless design, heat, vibration, and red light therapy. It shows how to attach the magnetic controller and adjust settings.
6. Maintenance
- Cleaning: Ensure the device is powered off and disconnected from any charging source before cleaning. Wipe the surface with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the massager belt in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Exposure: Keep the massager away from water and other liquids at all times to prevent damage to electronic components.
7. Specifications
| Specification | Detail |
|---|---|
| Brand | YIYIOOTH |
| Model Number | YIYIOOTH |
| Product Dimensions | 19.69 x 0.79 x 3.54 inches; 2.25 Pounds |
| Waist Circumference | 27-50 inches (with extension belt) |
| Heat Levels | 5 (38°C, 40°C, 42°C, 45°C, 48°C) |
| Heating Elements | 110 Red Light Beads |
| Vibration Modes | 3 (Kneading, Shiatsu, Powerful) |
| Vibration Intensity | 3 Levels (Low, Medium, High) |
| Motors | 4 |
| Battery Capacity | 5000mAh |
| Automatic Shut-off | 15 minutes |
8. Warranty & Support
For warranty information, troubleshooting, or customer support, please refer to the contact details provided on the product packaging or the official YIYIOOTH website. Keep your purchase receipt for warranty claims.