★Stainless Steel Vacuum Insulated Water Bottle 500ml★ A battery is built into the lid, allowing the temperature of the contents to be displayed on an electronic display. Due to the built-in battery, it cannot be used in a microwave. It cannot be washed in a dishwasher. It has a vacuum-insulated structure that provides heat and cold retention. [Product] Thermometer-equipped insulated water bottle [Condition] Unused, stored at home [Capacity] 500ml [Details] Insulated water bottle with digital water thermometer Made of stainless steel I tested the temperature with cold water just to be sure, and the temperature measurement worked correctly. It will be shipped without the outer box, wrapped in air-cushion packaging.