1. Introduction
The HEYCHY Deep Tissue Massage Gun is a portable electric percussion massager designed to provide deep muscle tissue massage, relieve pain, and reduce muscle pressure. It is suitable for daily relaxation and post-exercise recovery for adults seeking effective muscle care.
2. Package Contents
- HEYCHY Deep Tissue Massage Gun
- 6 Interchangeable Massage Heads (U-Shape, Round, Air Cushion, Wedge, Foam Flat, Bullet)
- USB-A to USB-C Charging Cable
- Soft Carrying Case
- User Manual

Figure 2.1: All items included in the HEYCHY Deep Tissue Massage Gun package.
3. Product Features
- 5 Speed Settings: Adjustable from 1300 to 2500 RPM for varied intensity.
- Quiet Operation: Built-in brushless motor reduces noise to below 30-50dB.
- Long-lasting Battery: Premium 2000mAh rechargeable Lithium-Ion battery.
- Auto-Shutdown: Safely shuts down after 10 minutes of continuous use to prevent overheating and potential harm.
- Ergonomic Design: Portable and handheld with an ergonomic handle for easy grip and use.
- Efficient Heat Dissipation: Larger heat dissipation holes increase air circulation, preventing overheating during prolonged use.
- 12mm Amplitude: Provides deep tissue massage for effective muscle relief.

Figure 3.1: Internal features and performance metrics of the massage gun.

Figure 3.2: Noise level comparison for quiet operation.

Figure 3.3: Amplitude comparison for deep tissue massage.
Video 3.1: An unboxing and review of the HEYCHY Massage Gun, demonstrating its components and initial impressions.
Video 3.2: A detailed look at why the HEYCHY massage gun stands out from competitors.
4. Safety Information
Always follow the manufacturer's instructions for use, electrical safety, and proper body positioning. Do not use the massager for more than 10 minutes at a time to avoid harm. Consult a healthcare professional if you have any pre-existing medical conditions or concerns.
5. Setup
5.1 Charging the Device
- Locate the USB-C charging port at the bottom of the massage gun.
- Connect the provided USB-A to USB-C cable to the device.
- Plug the USB-A end into a 5V/2A power supply (not included).
- The LED display will show battery life. Charge until fully indicated.
5.2 Attaching Massage Heads
- Ensure the massage gun is powered off.
- Select the desired massage head.
- Align the base of the massage head with the opening on the front of the gun.
- Gently push and twist the head until it is securely in place.
- To remove, gently pull and twist the head off.
6. Operating Instructions
6.1 Power On/Off
- To power on, slide the ON/OFF switch at the bottom of the handle to the 'ON' position.
- Press and hold the central power button on the LED display for 3 seconds to activate the device.
- To power off, press and hold the central power button for 3 seconds, then slide the ON/OFF switch to the 'OFF' position.
6.2 Speed Adjustment
- Once powered on, tap the central power button to cycle through the 5 speed levels.
- The LED display will show the current speed level (1-5) and battery life.
- Speed levels range from 1300 RPM (Level 1) to 2500 RPM (Level 5).
6.3 Usage Guidelines
- Apply the massage gun to the desired muscle area.
- Move the device slowly and gently over the muscle, applying light pressure.
- Do not apply excessive pressure or use on bony areas.
- The device will automatically shut down after 10 minutes of continuous use. Allow it to cool down before resuming use.

Figure 6.1: OLED screen and speed level indications.
Video 6.1: Demonstration of using the massage gun to relieve tight muscles.
7. Massage Head Guide
The HEYCHY Deep Tissue Massage Gun comes with 6 specialized massage heads, each designed for different muscle groups and massage needs:
- U-Shape Head: Ideal for neck, spinal muscles, and calves.
- Round Head: Suitable for large muscle groups such as quads, glutes, and general muscle soreness.
- Air Cushion Head: For sensitive muscles and relaxation.
- Wedge Head: Designed for shoulder blades, IT bands, scraping, and flushing.
- Foam Flat Head: For general use and relaxation of whole-body muscles.
- Bullet Head: For massaging deep tissue, joints, feet, and wrists.

Figure 7.1: Guide to massage head attachments and their applications.
Video 7.1: An honest review of the Heychy Massage Gun, showcasing its features and effectiveness.
8. Maintenance
- Wipe the device and massage heads with a damp cloth after each use.
- Do not use abrasive cleaners or immerse the device in water.
- Store the massage gun and its accessories in the provided carrying case in a cool, dry place.
9. Troubleshooting
- Device not turning on: Ensure the ON/OFF switch is in the 'ON' position and the battery is charged.
- Weak percussion: Check battery level and recharge if necessary. Increase the speed setting.
- Device stops unexpectedly: The 10-minute auto-shutdown feature may have activated. Allow the device to cool down before restarting.
- Charging issues: Ensure the USB-C cable is properly connected and the power supply is 5V/2A. Some users have reported issues with the USB-C port not securely holding cables; ensure a firm connection.
10. Specifications
| Product Dimensions: | 11.4 x 8.9 x 3.9 inches |
| Item Weight: | 4.1 Pounds |
| Item Model Number: | QL/DMS.S5-PRO |
| Batteries: | 1 Lithium Ion battery required (included) |
| Power Source: | Battery Powered |
| Material: | Plastic |
| Manufacturer: | HEYCHY |
11. Warranty and Support
For warranty information, product support, or to inquire about protection plans, please refer to the contact information provided in your product packaging or visit the official HEYCHY website. Protection plans are available for purchase separately to extend coverage for your device.