A. Upgrade your everyday routine with our innovative smart temperature display coffee mug, designed to keep your drinks at a suitable temperature for hours. This 510ml travel mug features double - walled construction and vacuum insulation, ensuring your coffee, tea or other beverages stay hot or cold for up to 12 hours. B. Main Features: 1. Long - lasting Temperature Maintenance: Enjoy your favorite drinks at a suitable temperature, maintaining the temperature for up to 12 hours. 2. Stainless steel: Made of food - grade stainless steel, this mug is resistant to oxidation and corrosion, making your drink smooth and safe. 3. Smart temperature display: Easily monitor the temperature of your drink, choosing a suitable temperature to suit your taste. 4. Leak - proof design: With a screw - on lid and silicone seal, this mug is highly leak - proof, perfect for on - the - go use. 5. Versatile use: Suitable for a variety of uses, from daily use to outdoor activities, such as travel, parties, school or camping. C. Specifications: 1. Material: Stainless steel 2. Capacity: 510mL 3. Item size: 180 * 85 * 85mm / 7.09 * 3.35 * 3.35in 4. Item weight: 260g/9.17oz 5. Package size: 175 * 90 * 90mm / 6.89 * 3.54 * 3.54in 6. Package weight: 280g/9.88oz D. Package includes: 1 x Coffee Mug