1. Introduction
Thank you for choosing the cotsoco Hand Massager. This device is designed to provide soothing heat and compression massage, targeting common hand discomforts such as those associated with arthritis and carpal tunnel syndrome. Please read this manual thoroughly before use to ensure proper operation and to maximize your experience with the product.

Figure 1.1: cotsoco Hand Massager in use.
The cotsoco Hand Massager offers a combination of heat, compression, and kneading to relieve hand fatigue and discomfort. Its ergonomic design accommodates various hand sizes and provides targeted relief to fingers, palm, and wrist areas.
2. Safety Information
WARNING: Please read all safety warnings before using this product.
- Avoid use on injured or inflamed skin.
- Do not expose to extreme heat or direct sunlight.
- Keep away from water.
- Allow the massager to cool before storing.
- Do not leave the massager unattended while in use.
- Unplug the massager when not in use.
- Do not use the massager while sleeping or taking a bath.
- Consult a physician before use if you have a medical condition or are pregnant.
- Keep out of reach of children and pets.
Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.
3. Package Contents
Please check the box for the following items:
- Hand Massager with Heat
- Power Adapter
- User Manual
- Finger Massager
- Disposable Gloves
- Gift Ribbon (for packaging)
4. Product Features

Figure 4.1: Full Hand Airbag Massage
The massager provides full hand airbag massage, including fingers kneading, hand top air compression, constant temperature hot compress, and wrist pressing. This comprehensive approach helps relax both physically and mentally.

Figure 4.2: Adaptable for All Hand Sizes
The inner cavity is enlarged, offering L/M/S size options to fit various hand sizes. Double-layer airbags surround the entire hand for effective massage. It also features 3 heat settings for personalized comfort.

Figure 4.3: 360° Surround Massage
Equipped with seven massage heads covering 23 acupuncture points, the device offers precise point-to-point dredging from the palm to the fingers, ensuring comprehensive relief.

Figure 4.4: Side View of Massage Mechanism
This view highlights how the upper and lower airbags rhythmically press along the fingers, hands, and wrists, providing all-sided care for your hand.
Official Product Video: Hand Massager Features
Video 4.1: This video demonstrates the various features and massage modes of the cotsoco Hand Massager, including heat and compression functions. It provides a visual guide to the product's operation and benefits.
5. Setup
5.1 Charging the Device
The cotsoco Hand Massager comes with a built-in 2500mAh Lithium-Ion battery. Before first use, or when the battery is low, charge the device using the provided power adapter and Type-C cable.
- Connect the Type-C cable to the charging port on the massager.
- Connect the other end of the cable to the power adapter.
- Plug the power adapter into a standard electrical outlet.
- The charging indicator light will illuminate. A full charge typically takes 4-5 hours.
- Once fully charged, disconnect the charger.
The device can be charged via a wall plug, laptop, or power bank, offering multiple convenient charging methods.

Figure 5.1: Charging Methods
5.2 Preparing for Use
- Ensure the device is fully charged.
- For enhanced comfort and hygiene, you may apply hand cream and wear the provided disposable gloves before inserting your hand into the massager.
Figure 5.2: Applying hand cream and gloves before use.
6. Operating Instructions
The cotsoco Hand Massager features an intuitive control panel with distinct buttons for various functions.

Figure 6.1: Easy to Control Panel
6.1 Button Functions
- Power Button (⏻): Press for 1 second to turn the device ON/OFF.
- Mode Button (m): Cycles through 3 massage programs/modes.
- Heat Button (∿∿∿): Selects from 3 heating levels.
- Intensity Button (|||): Adjusts between 3 intensity levels (Min, Mid, Max).
- Hand Size Buttons (✋): Selects from 3 sizes for hands (L/M/S).
6.2 Starting a Massage Session
- Insert your hand into the massager. The device is suitable for both left and right hands.
- Press the Power Button for 1 second to turn on the device.
- Select your desired hand size using the Hand Size Buttons.
- Press the Mode Button to cycle through the available massage modes until you find your preferred setting.
- Adjust the massage intensity using the Intensity Button (Min, Mid, Max).
- If desired, press the Heat Button to activate and adjust the heat level (3 settings available).
- The massager will automatically turn off after a set duration (typically 15 minutes) for safety and energy saving.

Figure 6.2: Relaxing with the Hand Massager
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your cotsoco Hand Massager.
- Cleaning: Wipe the exterior of the massager with a soft, damp cloth. Do not use abrasive cleaners or immerse the device in water.
- Storage: Store the massager in a cool, dry place away from direct sunlight and extreme temperatures. Use the provided carry bag for protection when not in use or during travel.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in constant use.
8. Troubleshooting
If you encounter any issues with your cotsoco Hand Massager, please refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Battery is depleted. | Charge the device fully. |
| Device does not turn on. | Power button not pressed correctly. | Press and hold the Power button for 1 second. |
| Massage intensity feels weak. | Intensity setting is too low. | Increase the intensity level using the Intensity button. |
| Heat function is not working. | Heat function is not activated or set to low. | Press the Heat button to cycle through heat levels. Ensure it's not set to off. |
| Unusual noise during operation. | Normal operation sound of air pump. | This is typically normal. If the noise is excessive or unusual, contact customer support. |
If the problem persists after attempting these solutions, please contact cotsoco customer support for assistance.
9. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 13.39 x 10.63 x 3.15 inches |
| Item Weight | 2.2 Pounds (1 Kilogram) |
| Item Model Number | MA315 |
| Battery Type | 1 Lithium Polymer battery (included) |
| Battery Capacity | 2500mAh |
| Power Source | Battery Powered |
| Material | Acrylonitrile Butadiene Styrene |
| Manufacturer | GUANGZHOU H & F ELECTRONICS TECHNOLOGY CO., LTD |
| Target Body Part | Finger, Hand, Wrist |
10. Warranty and Support
cotsoco is committed to providing high-quality products and excellent customer service.
- Warranty: Your cotsoco Hand Massager is covered by a 2-Year Warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use.
- Returns: We offer a 90-Days Free Return policy. Please refer to your purchase platform's return guidelines for detailed instructions.
- Customer Service: For any questions regarding use, technical issues, or warranty claims, please contact our 24H VIP Customer Service. We are dedicated to providing professional technical services and satisfactory support.
Contact information can typically be found on the product packaging or the official cotsoco website.

