1. Introduction
Thank you for choosing the Booster M2-B 24V Muscle Massage Gun. This device is designed for muscle relaxation, pain therapy, and body massage, utilizing advanced Smart-Hit™ vector hitting control technology to provide effective relief. Please read this manual thoroughly before use to ensure safe and optimal operation.

Figure 1: Booster M2-B 24V Muscle Massage Gun and accessories
2. Setup
2.1 Unpacking and Checking Contents
Carefully remove all components from the packaging. Ensure the following items are present:
- Booster M2-B 24V Massage Gun
- 6 Massage Heads (various shapes)
- Charger (100-240V 50/60Hz, 24W input; 24V/1A output)
- Portable Storage Bag
- User Manual

Figure 2: All components of the Booster M2-B 24V package
2.2 Charging the Battery
The device is equipped with a removable 24V lithium battery (2500mAh) with an electric quantity display. Before first use, fully charge the battery.
- Connect the charger to the massage gun's charging port.
- Plug the charger into a power outlet.
- The digital battery display on the handle will show the charging progress.
- A full charge provides approximately 7 hours of battery life.

Figure 3: Battery display and removal instructions
2.3 Attaching Massage Heads
The Booster M2-B comes with 6 different massage heads for various applications:
- Air Compression Soft Head: Used for sensitive muscle groups and soft tissue relaxation.
- Small Round Head: Suitable for full body muscle massage and relaxation.
- Bullet Head: Used for trigger point massage. Do not use for longer than 15 seconds on one spot.
- Flat Head: Suitable for full body muscle massage and relaxation.
- Spinal Head: Used for spinal massage, more irritating.
- Fork Head (Y-shaped): For muscles around the spine and Achilles tendon.
To attach a massage head:
- Ensure the device is turned off.
- Align the desired massage head with the opening on the front of the gun.
- Push firmly until the head is securely in place.
To remove a massage head:
- Ensure the device is turned off.
- Grip the massage head and pull it straight out.

Figure 4: Types of massage heads and their applications
2.4 Battery Removal (if applicable)
If you need to remove the battery (e.g., for replacement or storage):
- Turn off the power before removing the battery.
- Push the battery removal button to the nose with one hand and hold it.
- Hold the handle with the other hand and slowly pull out the battery downward.
3. Operating Instructions
3.1 Power On/Off
The device features an OLED touch screen for control.
- Power On: Long press the central power button on the OLED screen to turn on the device.
- Power Off: Long press the central power button again to turn off the device.

Figure 5: OLED Touch Screen Control Panel
3.2 Speed and Mode Adjustment
The Booster M2-B offers 8 speeds and three smart relaxation modes, powered by Smart-Hit™ vector hitting control technology. This technology monitors the pressure applied by the user and adjusts motor torque and speed in real-time for seamless intensity switching.
Video 1: Product demonstration showing head attachment, power on, speed/mode changes, and pressure sensitivity.
Standard Mode:
- Offers 900-3300rpm frequency.
- Use the touch controls on the OLED screen to select desired speed levels (1-8).
Automatic Modes (Long press the central button to switch modes):
- Fade-out Vibration: Decrease of vibration intensity, suitable for muscle relaxation after exercise.
- Crescendo Vibration: Increasing of vibration intensity, suitable for muscle activation before exercise.
- Wave Vibration: Fluctuation of vibration, suitable for various scenarios of relaxation.

Figure 6: Smart-Hit™ Vector Hitting Control Technology and Modes
3.3 Application Areas and Recommended Times
Apply the massage gun to the desired muscle group. Move the device slowly, allowing it to work on the muscle. Do not press too hard or stay in one spot for too long.
- Shoulder Muscle: 15-20 seconds x 3 times
- Chest Muscle: 30 seconds x 3 times
- Back Muscle: 30 seconds - 1 minute x 3 times
- Hip Muscle: 15-20 seconds x 3 times
- Lower Limb Muscle: 20-30 seconds x 3 times

Figure 7: Recommended application areas and durations
3.4 Precautions
- Do not touch the massage head when the device is running.
- Do not use the device for a long time in the same area.
- If you feel unwell, please stop using the device immediately.
- Do not use the device on infants, minors, pregnant women, pacemaker users, and people with fractures or metal contents.
4. Maintenance
4.1 Cleaning
To clean the device, wipe it with a slightly damp cloth. Do not immerse the device in water or use harsh chemicals.
4.2 Storage
Store the massage gun and its accessories in the provided portable drop-proof storage bag in a cool, dry place, away from direct sunlight and extreme temperatures.

Figure 8: Portable storage bag
5. Troubleshooting
If you encounter any issues with your Booster M2-B massage gun, please try the following:
- Device not turning on: Ensure the battery is fully charged.
- Weak percussion: Check if the massage head is properly attached. The Smart-Hit technology adjusts intensity based on pressure; try applying more pressure if you desire stronger percussion.
- Unusual noise: Ensure no foreign objects are obstructing the massage head or motor area.
If the problem persists, please contact customer support for assistance.
6. Specifications
| Feature | Detail |
|---|---|
| Brand Name | Booster |
| Product Number | Booster M2-B 24V |
| Item Type | Massage & Relaxation |
| Application | Body (Waist, Arms, Legs, Muscle Relex Apparatus, Waist & Abdomen Exercise, Head, Foot, Back, Hand, Wrist, Hip, Chest, Core, Other) |
| Type of Sports | Muscle Relaxation |
| Rated Input | 100-240V 50/60Hz, 24W |
| Rated Output | 24V/1A |
| Battery Type | Lithium battery, 2500mAh |
| Battery Life | Approx. 7 hours |
| Frequency | 900-3300rpm |
| Stroke | 12mm |
| Effective Massage Depth | 80mm |
| Motor | 12kg pressure-bearing, customized high power brushless motor |
| Noise Reduction | Triple noise reduction technology |
| Weight | 1.1kg (device only) / 1.8kg (package weight) |
| Dimensions (approx.) | 170mm x 60mm x 260mm |
| Material | Composite Material |
| Origin | Mainland China |

Figure 9: Detailed product specifications

Figure 10: Effective massage depth and stroke

Figure 11: Triple Noise Reduction Technology
7. Warranty and Support
The Booster M2-B 24V Muscle Massage Gun comes with a 12-month product warranty. The motor specifically has a 5-year warranty. In case of any issues or defects, the broken unit may be replaced with a new one for free within the warranty period.

Figure 12: Warranty information
For warranty claims or technical support, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
8. User Tips
- An English manual is included in the package for detailed instructions.
- If you have any after-sales problems or are not satisfied with the product, contact customer service immediately for assistance.
- Booster is a reputable brand focused on sports recovery; products are designed with quality in mind.




