Window and Double Wall Design With the classic double wall structure concept with a new glass viewing window design this kettle combines safe touch function and unique visual experience The glass window allows you to measure the perfect amount of water to boil and the thick outer wall ensures that the outer layer is always colder than the normal glass kettle to avoid accidental burns and cracks Bicolor LED and keep warm function Glass kettle light is designed with changeable bicolor LED system blue light will pool and swirl in the water when heated and green light will turn on together with keep warm function when You want the water to maintain the temperature between 1220 F and 1580 F The keepwarm function provides the right temperature for your tea and coffee and helps their flavors come out fully prepared for a more authentic taste Borosilicate Glass and 304 Stainless Steel The entire body of the kettle is made of specially crafted borosilicate glass which is known for its heat resistance and resistance to cracking And its bottom and inner lid are made of 100 food grade 304 stainless steel which saves natural water flavor without any smell after heating Safe Boiling This smart electric kettle will automatically turn off once the water is boiled And when there is no water inside the kettle to boil the power switch will also automatically turn off to protect the heating elements and ensure that the kettle lasts longer The 23L capacity allows you to prepare water for coffee tea and drinks all day at once Hasslefree service Glass is always focused on meeting customer needs and measuring customer satisfaction levels to determine the success of our business If there is any problem with our product you can contact us and we will take care of you until you are satisfied