Smart mug that maintains heat and cold

Note the digital screen does not work in this product *Smart cup with elegant design, maintains the temperature of drinks or their coldness for long periods, equipped with a digital screen to display the temperature. Product features: Digital screen: to display the temperature. Excellent thermal insulation: maintains the heat or coldness of drinks. Elegant and durable design. Product uses: Hot drinks: like coffee and tea. Cold drinks: like juices and water. The smart cup is the perfect solution to keep your drinks at the optimal temperature all day.