1. Introduction
Thank you for choosing the Bewinner 304 Stainless Steel 420ml Thermal Lunch Container. This manual provides essential information for the safe and effective use, maintenance, and care of your new thermal container. Please read these instructions thoroughly before first use and retain them for future reference.
2. Product Overview
The Bewinner Thermal Lunch Container is designed for excellent heat preservation, keeping your food fresh and at the desired temperature for extended periods. Constructed from high-quality 304 stainless steel, it ensures durability and food safety. Its lightweight and portable design, coupled with a secure sealing mechanism, makes it ideal for various daily activities.

Image: The Bewinner 420ml Thermal Lunch Container in creamy white, with its lid removed, showcasing the food-grade 304 stainless steel interior.
Key Features:
- Excellent Heat Preservation: Designed to maintain food temperature effectively.
- 304 Food-Grade Stainless Steel: Non-toxic, harmless, and safe for all food types.
- Good Sealing: Lid design prevents spills and leaks, preserving food flavor and nutrients.
- Wide Application: Suitable for work, school, outdoor dining, and other outings.
- Lightweight and Portable: Round design for easy carrying.

Image: Visual representation of key features including 304 Stainless Steel, Food Grade PP, Easy to Clean, Various Combinations, and Temperature Locking with Freshness Preservation.
3. Safety Information
- Always handle with care when containing hot liquids or food to prevent burns.
- Ensure the lid is securely fastened to prevent leaks, especially when transporting.
- Do not use in a microwave oven. This specific model is insulated and not designed for microwave use.
- Keep out of reach of children when containing hot contents.
- Avoid dropping the container, as this may damage the insulation or sealing mechanism.
- Do not use abrasive cleaners or scrubbers that could scratch the stainless steel surface.
4. Setup
- Unpacking: Carefully remove the thermal container from its packaging.
- Initial Cleaning: Before first use, wash all parts (container and lid) with warm, soapy water. Rinse thoroughly and dry completely.
- Inspection: Check for any damage or defects. If any are found, do not use the product and contact customer support.
5. Operating Instructions
Using for Hot Food:
- For best results, pre-heat the container by filling it with hot water for 5-10 minutes. Empty the water before adding food.
- Place your hot food into the container.
- Securely twist the lid onto the container until it is tightly sealed.
Using for Cold Food:
- For best results, pre-chill the container by filling it with cold water for 5-10 minutes. Empty the water before adding food.
- Place your cold food into the container.
- Securely twist the lid onto the container until it is tightly sealed.

Image: A close-up view of the container's lid, highlighting its sealed and leakproof design to prevent spills.
Important Note on Liner:
This specific model is an Insulated Style container. The inner liner is not removable. Do not attempt to remove it, as this may damage the product and compromise its thermal performance.

Image: A visual comparison illustrating that the Insulated Model, like this product, features a non-removable inner liner, distinguishing it from microwaveable versions.
6. Maintenance and Care
- Cleaning: Hand wash the container and lid with warm, soapy water after each use. Rinse thoroughly to remove all soap residue.
- Drying: Ensure all parts are completely dry before storing to prevent odors or mildew.
- Storage: Store with the lid slightly ajar to allow air circulation and prevent odors.
- Avoid Harsh Chemicals: Do not use bleach, chlorine-based cleaners, or abrasive scrubbers, as these can damage the stainless steel and plastic components.
7. Troubleshooting
Issue: Food not staying hot/cold.
- Solution: Ensure the lid is securely tightened. Pre-heat or pre-chill the container as described in the Operating Instructions before adding food.
Issue: Lid is difficult to open or close.
- Solution: Check for food particles or residue on the threads of the lid or container. Clean thoroughly. Ensure the lid is aligned correctly before twisting.
Issue: Leaking.
- Solution: Verify that the lid is fully and correctly tightened. Inspect the silicone seal (if present) for any damage or misalignment.
8. Specifications
| Attribute | Detail |
|---|---|
| Model Number | Bewinnerd2tni7qh3w-14 |
| Material | 304 Stainless Steel, Plastic |
| Capacity | 420ml |
| Color | Creamy White (Insulated Style) |
| Item Weight | 151 Grams (5.3 ounces) |
| Package Dimensions | 3.94 x 3.94 x 2.36 inches |
| Manufacturer | Bewinner |

Image: A diagram illustrating the physical dimensions of the thermal container, measuring 11.5 cm (4.5 inches) in width and 6.5 cm (2.6 inches) in height.
9. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact Bewinner customer service directly. Contact details can typically be found on the manufacturer's official website or through your retailer.