【Indicator status】 The kettle has an indicator light, which will remain red until the water is boiled. After boiling, it will turn green to keep the water warning. The color is bright and bright. 【Safe and non-toxic】 The kettle lid of the Car Heating Cup is made of high-quality silicone, which is safe and non-toxic, has a good seal, can keep the water warm and ensure that the beverage will not overflow.