Introduction
The O2COOL Treva 5 Inch Battery Powered Fan is a compact and portable cooling solution designed for personal use. Ideal for desks, cubicles, travel, or emergency situations, this fan offers two cooling speeds and operates quietly. Its convenient folding and tilt design allows for easy storage and precise airflow direction.

Figure 1: Front view of the O2COOL Treva 5 Inch Battery Powered Fan.
Safety Information
Please read all instructions carefully before using the fan. Keep this manual for future reference.
- Do not immerse the fan in water or other liquids.
- Do not operate the fan with a damaged cord or plug, or after the fan malfunctions or has been dropped or damaged in any manner.
- Keep fingers, hair, and loose clothing away from the fan blades during operation.
- Ensure batteries are inserted correctly according to polarity markings (+/-).
- Remove batteries if the fan will not be used for an extended period.
- Do not mix old and new batteries, or different types of batteries.
- This fan is intended for indoor and outdoor use, but avoid direct exposure to heavy rain or extreme weather conditions.
Product Features
- Battery Powered: Operates on 2 D batteries (not included) for cordless convenience.
- Compact and Portable Design: Features a convenient folding design for easy storage and transport.
- Two-Speed Operation: Offers high and low-speed settings for customized airflow.
- Quiet Operation: Designed to operate with minimal noise, suitable for quiet environments.
- Adjustable Tilt: The fan head can be tilted to direct airflow precisely where needed.
- Durable Construction: Made from plastic with a matte finish for longevity.

Figure 2: The O2COOL Treva fan in its folded position, highlighting its portability.

Figure 3: Dimensions of the O2COOL Treva fan.
Package Contents
- 1 x O2COOL Treva 5 Inch Battery Powered Fan
- Note: 2 D batteries are required and not included.
Setup
Battery Installation
- Locate the battery compartment on the base of the fan.
- Slide out the battery door to open the compartment.
- Insert two (2) D batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Replace the battery door by sliding it back into place until it clicks securely.
Unfolding the Fan
- Gently unfold the fan from its compact position until the base is stable and the fan head is upright.
- Adjust the tilt of the fan head to your desired angle for optimal airflow.
Operating Instructions
- Ensure batteries are properly installed.
- Locate the power switch, typically a push button or slide switch, on the side or base of the fan.
- Slide the switch to the "Low" setting for a gentle breeze.
- Slide the switch further to the "High" setting for maximum airflow.
- To turn off the fan, slide the switch back to the "Off" position.
Maintenance
- Cleaning: Disconnect power (remove batteries) before cleaning. Use a soft, damp cloth to wipe the exterior surfaces. Do not use abrasive cleaners or allow water to drip into the motor housing.
- Storage: When not in use, fold the fan into its compact form and store it in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Fan does not turn on. | Batteries are dead or incorrectly installed. | Replace batteries with new D batteries, ensuring correct polarity. |
| Fan runs slowly or weakly. | Batteries are low. | Replace batteries. |
| Fan makes unusual noise. | Obstruction in fan blades or internal issue. | Turn off and remove batteries. Carefully check for any obstructions and remove them. If noise persists, discontinue use. |
Specifications
| Feature | Detail |
|---|---|
| Brand | O2COOL |
| Model Name | O2COOL FD0500400O006AMB 5-Inch Portable Fan, Black |
| Model Number | FD0500400O006AMB |
| Power Source | Battery Powered (2 D batteries required, not included) |
| Product Dimensions | 4.3"D x 6.6"W x 6.2"H |
| Item Weight | 0.45 Pounds (7.2 ounces) |
| Number of Speeds | 2 |
| Blade Length | 5 Inches |
| Blade Material | Plastic |
| Control Method | Touch (Push Button/Slide Switch) |
| Indoor/Outdoor Usage | Indoor, Outdoor |
| UPC | 755247121246 |
Warranty and Support
Warranty: The product's warranty information is not specified beyond "N/a" in the provided details. Please refer to the product packaging or contact O2COOL customer service for specific warranty terms.
For further assistance or inquiries, please visit the official O2COOL website or contact their customer support channels.