DAM HY-668
DAM Fascia Gun HY-668 Muscle Massage Gun User Manual
Model: HY-668 | Brand: DAM
Introduction
Thank you for choosing the DAM Fascia Gun HY-668 Muscle Massage Gun. This device is designed to provide deep tissue massage, aid in muscle recovery, and improve overall well-being. Please read this manual carefully before use to ensure safe and effective operation.
Product Overview
Components

Figure 1: DAM Fascia Gun HY-668 Muscle Massage Gun. This image shows the main unit of the massage gun with a spherical head attached, highlighting its compact and ergonomic design in black and gold.
- Main Massage Gun Unit
- 4 Interchangeable Massage Heads
- USB-C Charging Cable
- User Manual (this document)
Features
- 5 Intensity Levels: Adjustable speed up to 3000 RPM for varied massage needs.
- 4 Massage Heads: Designed for different muscle groups and body parts.
- Long Battery Life: 2000 mAh rechargeable battery providing up to 5 hours of use.
- Quiet Operation: Equipped with a silent motor.
- Portable Design: Compact and lightweight, ideal for use at home, gym, or while traveling.

Figure 2: Silent Motor and High Speed. This diagram illustrates the internal motor mechanism, emphasizing its quiet operation and high rotational speed of up to 3000 RPM.
Setup
Charging the Device
- Before first use, fully charge the massage gun.
- Connect the USB-C charging cable to the charging port on the device.
- Connect the other end of the cable to a compatible USB power adapter (not included) or a USB port.
- The gear indicator lights will show the charging status. All lights illuminated indicate a full charge.

Figure 3: Device Controls and Charging Port. This image highlights the location of the ON/OFF button, the gear indicator lights, and the USB-C charging port on the massage gun.

Figure 4: Battery Capacity. This diagram visually represents the 2000mAh rechargeable battery, emphasizing its low energy consumption and up to 5 hours of endurance.
Attaching Massage Heads
- Ensure the device is turned off before attaching or removing any massage head.
- Gently push the desired massage head into the opening at the front of the gun until it is securely seated.
- To remove, gently pull the head straight out.

Figure 5: Four Interchangeable Massage Heads. This image displays the four different massage heads: Spherical (for large muscle groups), Flat (for whole body), Cylindrical (for joints), and U-shaped (for spinal column), along with their recommended applications.
Massage Head Applications:
| Head Type | Recommended Use |
|---|---|
| Spherical Head | Large muscle groups (e.g., arms, thighs, calves, glutes) |
| Flat Head | Whole body relaxation, general muscle massage |
| Cylindrical Head | Joints, deep tissue, trigger points |
| U-shaped Head | Spinal column, Achilles tendon, neck muscles |
Operating Instructions
Turning On/Off and Adjusting Speed
- To turn on the device, press and hold the ON/OFF button for 2 seconds. The device will start at the lowest intensity level.
- To increase the intensity level, short press the ON/OFF button. Each press will cycle through the 5 available levels. The gear indicator lights will illuminate to show the current level.
- To turn off the device, press and hold the ON/OFF button for 2 seconds.
Usage Guidelines
- Apply the massage gun to the desired muscle area. Do not apply excessive pressure.
- Move the device slowly over the muscle, avoiding direct contact with bones or joints.
- For optimal results, use for 1-2 minutes per muscle group. Do not exceed 15 minutes of continuous use.
- The massage gun can be used before, during, or after training to stimulate blood circulation, warm up muscle tissue, improve elasticity, and aid in recovery.
- It helps to awaken muscles, release fascia, eliminate lactic acid, and provide deep tissue massage.
- Consult a healthcare professional if you have any pre-existing medical conditions or concerns.
Maintenance
- Always turn off the device before cleaning.
- Wipe the device and massage heads with a slightly damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Store the massage gun in a cool, dry place, away from direct sunlight and extreme temperatures.
- Keep out of reach of children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery. | Charge the device fully. |
| Device stops during use. | Overheating or low battery. | Allow the device to cool down, then recharge if necessary. |
| Massage head is loose. | Not properly attached. | Ensure the device is off, then firmly push the head into place. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | HY-668 (DMAF0134C0096) |
| Brand | DAM |
| Battery Capacity | 2000 mAh (Rechargeable) |
| Battery Life | Up to 5 hours |
| Speed Levels | 5 levels |
| Max Speed | 3000 RPM |
| Motor Power | 24 W |
| Operating Temperature | -10 ~ 40 °C |
| Dimensions (L x W x H) | 13 x 5.2 x 18.4 cm |
| Weight | 612 grams |
| Material | ABS and Metal Alloy |
| Charging Port | USB-C |
Warranty and Support
For warranty information or technical support, please refer to the purchase documentation or contact your retailer. Keep your proof of purchase for any warranty claims.
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