1. Product Overview
The EAST OAK Cordless Heated Lunch Box is designed to provide warm meals anywhere, offering convenience and portability. It features a high-performance 59.2Wh lithium battery, supporting approximately 2 hours of powerful heating and an additional 1 hour of automatic heat preservation. This lunch box includes dual heating modes: a Smart Reservation mode for scheduled heating and an Instant-On mode for immediate use. Its thoughtful design ensures even heating, leak-proof transport, and easy cleaning.

Figure 1: The EAST OAK Cordless Heated Lunch Box in use, highlighting its battery-powered portability.

Figure 2: The lunch box offers a spacious 5.5-cup capacity, larger than many standard portable food warmers.
2. What's in the Box
The complete set includes the following components:
- Wireless heating lunch box (1)
- Inner container (1) - Food-grade 304 stainless steel
- Insulated bag (1)
- Removable divider (1)
- Spoon and fork (1 set)
- Utensil bag (1)
- Power adapter (1)

Figure 3: Included 7-inch adult-sized spoon and fork for comfortable use.

Figure 4: A dedicated utensil bag keeps your spoon and fork tidy.

Figure 5: The removable tray divider allows for customizable meal compartments.

Figure 6: The removable inner container helps ensure food freshness.

Figure 7: The included insulated bag reduces heat loss and enhances heating efficiency.
3. Setup Guide
Before first use, ensure the lunch box is fully charged using the provided power adapter. The digital display will show the battery level.
- Calibrate Current Time: Upon first use, set the current time on the device. This is crucial for the Smart Reservation function.
- Set Target Meal Time: Determine your desired meal time.
- Set Heating Temperature: Adjust the heating temperature as needed.
Important Reminder:
To ensure the reservation function works correctly, turn on the electric lunch box at least 2 hours before your set meal time. This initiates the automatic preheating cycle.

Figure 8: Visual guide for setting the current time, meal time, and heating temperature.

Figure 9: The digital display provides real-time battery levels and charging status.
4. Operating Instructions
4.1 Dual Heating Modes
The lunch box offers two primary heating modes:
- Smart Reservation (Set-and-Forget Mode): After calibrating the time and setting your desired meal time, the lunch box will automatically calculate and begin heating approximately two hours in advance. This ensures your food is perfectly warm at the scheduled time without manual intervention.
- Instant-On Mode (Immediate Heating): For spontaneous heating, activate the Instant Heating mode with a single tap. This mode initiates a full 2-hour heating cycle immediately.

Figure 10: Illustration of the Smart Scheduled Heating function, preheating 2 hours before the set meal time.

Figure 11: The memory function saves your last set meal time and temperature for convenience.

Figure 12: The Immediate Heating Mode provides quick heating when plans change.
4.2 Even Heating & Temperature Control
The heating plate can reach a maximum temperature of 220°F (approximately 104°C) and is adjustable. It ensures warmth penetrates food evenly from bottom to top, reducing cold spots and preserving flavor.
- Temperature Display: The screen shows the heating plate's temperature. The actual food temperature will be slightly lower to prevent overheating and maintain optimal taste.
- Boost Efficiency: Using the included insulated bag can significantly improve heating speed and heat retention.
- Tips for Even Heating:
- For drier foods, add a small amount of water to create steam for more uniform heating.
- Ensure food is in contact with the bottom of the container, as heating starts from there. For large items, adding a small amount of sauce or water can promote thermal circulation.
- If more thorough heating is desired, moderately increase the temperature or set the reservation time 20-30 minutes earlier.
- Tip for Frozen Foods: For best results, thaw frozen food in the refrigerator overnight before heating.

Figure 13: The lunch box heats food thoroughly up to 220°F.

Figure 14: The EAST OAK lunch box offers higher and more consistent heating temperatures.
5. Care & Maintenance
5.1 Cleaning
The inner container, removable divider, fork, and spoon are all dishwasher safe for quick and effortless cleanup.

Figure 15: All removable components are dishwasher safe for easy cleaning.
5.2 Leak-Proof Design
The lid is equipped with a silicone seal ring to prevent leaks during daily commutes and travel. Ensure the lid is properly secured with all three clips before transport.

Figure 16: The silicone-sealed lid ensures a leak-proof experience.
5.3 Materials & Allergy Notice
The inner container is made of food-grade 304 stainless steel. Please note that this material contains trace amounts of nickel. It is not suitable for individuals with a nickel allergy.
5.4 Low-Temperature Environment Note
To prevent temperature sensor reading errors, avoid powering on or storing the unit in extremely low-temperature environments.
6. Troubleshooting Guide – Error Code E1
If you encounter Error Code E1, follow these self-repair steps:
- Remove & Open: Remove the four screws, then gently pry open the left and right clips of the device.
- Disconnect Battery: Remove the battery cover, pull out the battery connector, and disconnect it completely.
- Discharge Key: With the screen black, press the power button several times to discharge any residual power.
- Reassemble: Carefully put the device back together.
Note:
This operation involves disassembly. Please proceed with caution. If you are unsure or uncomfortable performing these steps, contact official customer service for guidance.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | EAST OAK |
| Model Number | B0FP5BQN8N |
| Color | Classic Blue |
| Material | Food-grade 304 Stainless Steel (inner container), Steel (general) |
| Capacity | 1.3 Liters (5.5 Cups) |
| Battery | 59.2Wh Lithium Battery |
| Heating Time | Approx. 2 hours continuous heating |
| Keep Warm Time | Approx. 1 hour automatic heat preservation |
| Max Heating Plate Temperature | 220°F (104°C) |
| Special Features | Cordless, Rechargeable, Memory Function, Automatic Keep Warm, Dishwasher Safe (removable parts), Leak-Proof Seal, Removable Divider |
| Item Weight | 1.8 Kilograms |
| UPC | 850075992812 |
8. Warranty & Support
For warranty information, product support, or to contact customer service regarding any issues or questions, please refer to the official EAST OAK website or the contact information provided with your purchase. Always retain your proof of purchase for warranty claims.