Introduction
The bnf® USB Plug-in Heating Portable Lunch Warmer is designed to keep your food warm and ready to eat, whether you are at the office, in your car, or enjoying an outdoor activity. Made with premium stainless steel, this insulated lunch container ensures a constant temperature for your meals. Its portable design and convenient features make it an ideal solution for enjoying hot food on the go.
Important Safety Instructions
Please read and understand all safety instructions before using the product. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always plug the device directly into a USB interface (2A). Do not use adapters or power sources not rated for 2A.
- Ensure the bottom of the lunch warmer remains dry. If the bottom becomes wet, immediately unplug the device and dry it thoroughly under the sun or in a well-ventilated area before next use.
- Do not immerse the main body of the lunch warmer in water or any other liquid.
- Keep out of reach of children.
- Do not use if the USB cable or the device itself appears damaged.
- Unplug the device when not in use or before cleaning.
- Use only for its intended purpose of warming food.
Product Overview
The bnf® Food Warmer consists of the following main components:
- Main Insulated Body: The primary container for your food, featuring a heating element at the base.
- Lid: A secure lid to seal the container and retain heat.
- Internal Compartments: Designed for separating different food items like rice, soup, or other dishes.
- Portable Handle: A sturdy handle for easy carrying.
- USB Port: Located at the base for power connection.


Setup
- Unpack: Carefully remove all components from the packaging.
- Initial Cleaning: Before first use, wash the internal stainless steel compartments and the lid with warm soapy water. Rinse thoroughly and dry completely. Do not wash the main external body with water.
- Assemble: Place the clean, dry internal compartments into the main insulated body.
- Prepare Food: Place your desired food items into the compartments. The compartment design helps keep different foods separate and prevents tainting.

Operating Instructions
- Load Food: Ensure your food is placed inside the internal compartments and the lid is securely closed.
- Connect Power: Plug the USB cable into the USB port at the base of the lunch warmer. Connect the other end of the USB cable to a compatible 2A USB power source (e.g., car USB port, power bank, wall adapter).
- Heating: The device will begin to heat your food to a constant temperature. The heating time may vary depending on the initial temperature and quantity of food.
- Enjoy: Once your food is warmed to your preference, unplug the device and carefully open the lid to enjoy your meal.

Maintenance and Cleaning
Proper maintenance ensures the longevity and hygiene of your bnf® Food Warmer.
- Unplug Before Cleaning: Always ensure the device is unplugged from the power source before cleaning.
- Internal Components: The stainless steel internal compartments and the lid are designed with a wide mouth for easy cleaning. Wash them with warm, soapy water. Rinse thoroughly and dry completely after each use.
- External Body: Wipe the exterior of the main insulated body with a damp cloth. Do not immerse the main body in water.
- Drying: To ensure long-term use, always dry and store the lunch box in a dry place after each cleaning. Pay special attention to the bottom area to prevent moisture accumulation.
- Storage: Store the lunch warmer in a cool, dry place when not in use.
Troubleshooting
If you encounter any issues with your bnf® Food Warmer, please refer to the following common solutions:
- Device not heating:
- Ensure the USB cable is securely plugged into both the device and a 2A USB power source.
- Check if the power source is active and providing sufficient power (2A).
- Inspect the USB cable for any visible damage.
- Food not warming sufficiently:
- Ensure the lid is tightly closed to retain heat.
- Allow sufficient time for heating. Heating time varies based on food quantity and initial temperature.
- Verify the power source is consistently providing 2A.
- Unusual odors or sounds:
- Immediately unplug the device.
- Do not use the device if it emits unusual odors, smoke, or sounds. Contact customer support.
For issues not covered here, please contact bnf customer support.
Specifications
| Feature | Detail |
|---|---|
| Model Number | FWNDS70104230 |
| Brand | bnf |
| Material | Stainless Steel (internal components) |
| Power Input | USB (2A recommended) |
| Height | 26 cm (10.24 inches) |
| Diameter/Width | Approx. 13.5 cm (5.31 inches) (Inferred from image) |
| Included Components | 1x Insulated Lunch Box |
| Country of Origin | China |

Warranty and Support
Specific warranty details for this product are not provided in the available information. For warranty claims, technical support, or any product-related inquiries, please contact the manufacturer or seller directly through their official channels.
Manufacturer: Nalini Shubhra Enterprises
Email: Nalinishubhra@gmail.com