This portable heating cup is made of premium stainless steel, which is healthy, solid and durable to use. The lid has good sealing and ensures that the drinks does not spill over. The mug suits most vehicle cup holders, suitable for drive travel, picnic, camping and other outdoor activities. Specification:Condition: 100% Brand New Material: Stainless Steel Voltage: 12V Color: Silver Capacity: 450mL Bottom Diameter: approx. 6.8cm/2.68in Size: approx. 8.5*16.2cm/3.35*6.38in Weight: approx. 292g/10.3oz Package List: 1 * Stainless Steel Heating Cup1 * Power Plug Note: 1. Please allow 1-3cm error due to manual measurement, thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. Made of quality stainless steel, high temperature resisting, solid and durable. Cup inner and outer layer uses vacuum insulation technology, good insulation effect to prevent scald. The lid has good sealing and can prevent the drink from spilling over in the car. Convenient to use with standard car cigarette lighter plug, it suits most vehicle cup holders. Can use it to boil water or eggs, warm coffee, tea, milk and other drinks, practical to use.