Important Safety Information
Please read all instructions carefully before using this product and retain them for future reference. Improper use may result in electric shock, fire, or other hazards.
- Do not disassemble, repair, or modify the fan.
- Keep the fan away from water and high humidity environments.
- Do not insert fingers or foreign objects into the fan's air outlet.
- Use only the provided USB-C charging cable and a compatible power adapter (5V/2A recommended).
- Keep out of reach of children.
- Avoid dropping the fan or subjecting it to strong impacts.
Product Overview
The MERTTURM Handheld Portable Fan (Model HF002) is a versatile and compact cooling device featuring a turbocharged system, 5 adjustable speeds, an LED digital display, and a 3600mAh rechargeable battery. Its foldable design allows for handheld, desk, or neck-worn use.

Image: The MERTTURM Handheld Portable Fan in its green color variant, showcasing its compact and modern design.

Image: An exploded view of the fan's internal structure, highlighting the high-speed brushless motor and turbine fan blades responsible for powerful airflow.
What's in the Box
Verify that all the following items are included in your package:
- 1 x MERTTURM Handheld Portable Fan
- 1 x User Manual
- 1 x USB-C Charging Cable
- 1 x Lanyard

Image: The complete package contents, showing the fan, USB-C charging cable, user manual, and product box.
Setup
Charging the Fan
Before first use, fully charge the fan. The LED display will show the battery level.
- Connect the provided USB-C charging cable to the fan's charging port.
- Connect the other end of the USB-C cable to a USB power source (e.g., USB adapter, laptop, power bank, car charger).
- The LED display will indicate charging status. A full charge typically takes approximately 2 hours.

Image: The MERTTURM fan being charged via its USB-C port, illustrating the connection method.
Attaching the Lanyard
For hands-free use, attach the included lanyard to the designated loop on the fan's handle.
Operating Instructions
Power On/Off
- To Power On: Short press the power button once. The fan will start at speed 1.
- To Power Off: Long press the power button for at least 2 seconds.
Adjusting Fan Speed
The fan has 5 adjustable speed levels.
- While the fan is on, short press the power button to cycle through speeds 1 to 5.
- Each press will increase the speed by one level. After speed 5, it will cycle back to speed 1.
Understanding the LED Display
The integrated LED display shows the current fan speed and remaining battery power.
- Fan Speed: A number from 1 to 5 indicates the active fan speed.
- Battery Level: A battery icon with bars indicates the remaining power (e.g., 4 bars for 100%-75%, 1 bar for 25%-5%).

Image: Close-up of the fan's LED display, clearly showing the current wind speed (e.g., '5') and the battery charge level indicator.

Image: A visual guide demonstrating the simple one-button operation for switching the fan on/off and adjusting the speed, along with battery indicator explanations.
Usage Modes
The fan's foldable design allows for multiple usage configurations:
- Handheld Mode: Use the fan unfolded (180°) for personal cooling on the go.
- Desk Fan Mode: Fold the fan to a 90° angle to place it stably on a table or desk.
- Neck-Worn Mode: Attach the lanyard and wear the fan around your neck for hands-free cooling.

Image: Illustration of the fan's versatile 3-in-1 cooling positions, showing it used around the neck, as a desk fan, and held in hand.
Maintenance
Cleaning
To ensure optimal performance and longevity, clean the fan regularly.
- Ensure the fan is powered off before cleaning.
- Wipe the exterior of the fan with a soft, dry cloth.
- Do not use abrasive cleaners, solvents, or immerse the fan in water.
- The hidden blade design minimizes dust accumulation; however, if necessary, use a soft brush or compressed air to gently clear any dust from the air outlet.
Storage
When not in use for extended periods, store the fan in a cool, dry place, away from direct sunlight.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on | Low battery Power button not pressed correctly | Charge the fan fully. Ensure a short press for ON, long press for OFF. |
| Weak airflow | Low battery Fan speed set too low | Charge the fan. Increase the fan speed using the power button. |
| Fan stops unexpectedly | Battery depleted | Recharge the fan. |
| LED display not working | Fan is off Malfunction | Turn on the fan. Contact customer support if the issue persists. |
Specifications
| Feature | Detail |
|---|---|
| Brand | MERTTURM |
| Model Name | HF002 |
| Color | Green |
| Electric Fan Design | Wearable Fan |
| Power Source | Battery Powered (Rechargeable) |
| Battery Capacity | 3600mAh |
| Number of Speeds | 5 |
| Max Speed | 13000 RPM |
| Wattage | 7 Watts |
| Voltage | 5 Volts |
| Product Dimensions (D x W x H) | 17D x 6W x 5H Centimeters |
| Item Weight | 195 Grams |
| Material Type | Acrylonitrile Butadiene Styrene (Plastic) |
| Connector Type | USB Type C |
| Special Features | Bladeless, Foldable, High Velocity, Portable, LED Display |
| Country of Origin | China |
Warranty
This MERTTURM Handheld Portable Fan (Model HF002) comes with a 120-day warranty from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or improper maintenance. Please retain your proof of purchase for warranty claims.
Customer Support
For any questions, technical assistance, or warranty claims, please contact MERTTURM customer support:
- Manufacturer Contact: muyo.us@outlook.com
- Packer Contact (Shenzhen Qifeng E-Commerce Co., Ltd): qifeng.in@outlook.com
- Importer Contact (TIGER PUG COMMERCE PRIVATE LIMITED): 022-6879 5151, consumerservices@tigerpug.com
When contacting support, please provide your product model (HF002) and a detailed description of the issue.