Product Features: 1. Fits a travel mug with a capacity of approximately 450 ml, perfect for family trips and for keeping coffee warm during camping trips. The kettle is powered by a 12V DC cigarette lighter socket, compatible with 12V cars, allowing you to enjoy hot water, coffee, milk, tea, etc. on the go. The back of the mug is made of high-quality stainless steel, safe for drinking boiling water. The sealing lid is made of high-quality silicone, safe and non-toxic. Excellent sealing performance effectively keeps drinks warm and prevents spills. The travel mug uses vacuum insulation technology inside and out; the double vacuum insulation design maximizes the temperature retention of drinks, providing excellent insulation and preventing burns. This car coffee mug warmer fits most car cup holders, perfect for travel. The built-in coffee mug warmer has an indicator light for easy monitoring of the kettle's status. Easy to use: simply pour water into the mug and connect it to your car with the cigarette lighter cable via a 12V power source. This travel heated mug can be connected to any standard 12V cigarette lighter socket via the included 12V adapter. The power cable is approximately 128 cm/50.39 inches long and fits most cars, trailers, RVs, and camping vehicles. Specifications: Material: Stainless steel; Color: Silver; Voltage: DC 12V (car cigarette lighter); Heating temperature: Approximately 60°C, 15 minutes; Capacity: Approximately 450 ml; Weight: Approximately 300 g; Single cup dimensions: Total length: Approximately 16 cm/6.30 inches; Cup diameter: Approximately 8.7 cm/3.43 inches; Inner diameter: Approximately 7.8 cm/3.07 inches; Bottom diameter: Approximately 6.7 cm/2.64 inches; Total length: Approximately 128 cm/50.39 inches. Note: This cup cannot boil water! This product is designed to maintain the original temperature of hot drinks (only heat preservation) and does not have the function of heating drinks to boiling. Package contents: 1 x Car Heated Mug. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the actual product. The allowed measurement error is +/- 1-3 cm.