450ml 12V Stainless Steel Electric Car Cup Travel Heating Cup Electric Thermos Plug Kettles Boiling Car Coffee Mug Heater with Adapter Powered by 12V cigarette lighter plug power source, enables to drink of hot water on the road. Made of food-grade 304 stainless and PP material, safe to drink the boiled water. The designed with indicator light can understand the working state of the electric cup. Cup inner and outer using vacuum insulation technology, good-insulation effect to prevent burns. Sealed kettle cover made by high-quality silicone gel, safe and non-toxic, good sealing performance to keep water warm, and ensures that the drink does not spillover. Fits most car cup holders, great for travel use.