Thermos flask, with thermometer. Volume: 500 ml. Material: stainless steel, plastic. Designed for hot and cold drinks. Do not use for carbonated beverages and dairy products. The thermometer is powered by a 1st CR 2032 battery (included, not replaceable). The battery life depends on the frequency of use of the thermos flask - at least 1 year. Care instructions: Hand wash with a mild detergent. After washing, wipe dry and dry. Can be washed in the dishwasher.