How many hours does a lunchbox keep warm?

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1. Keeping time of the lunchbox warm,varies depending on model.

   • Generallythermos lunchbox typesup to 6 hoursProvides temperature protection.
   • Steel lunch box made of first-class materialthe food inside15 secondscan keep you warm.
   • The ventilation hole on the lid of some models may affect the keeping warm time.
   • Some lunchbox models, depending on brand, model and qualityup to 24 hoursIt can maintain the temperature of the food.

   In order to ensure maximum heat retention of the lunchbox, it is recommended to fill it with boiling water before adding hot food, wait 5 minutes, then drain the water and put the hot food.

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