Variable temperature kettle

Hi fellow mummies, anyone using this kind of kettle whereby you can choose from a number of temperature you want it to stay warm at? It is said to boil until 100°C and then it will slowly drop to the temperature you have set. Like in this photo it is set to a 45°C which is perfect for making formula milk. I would like to know which brand are you all using and where to buy in Singapore. I’ve only seen it on Taobao.