High-quality stainless steel The exterior stainless steel whereas the interior comes with a non-stick coating. The ergonomic handle adds to the ease of use Built-In Strix Temp Controller The built-in Strix tem controller automatically stops heating and automatically keep the temperature once the milk or froth reaches 149 ± 9 ° F Includes Accessories Cleaning brush: used to clean the residual foam from the milk frother 2 different whisks: frothing milk function and warm milk function Milk Level Indicator MIN/MAX indicators will let you know how much milk you need to add. This frother can heat up to 240ml (8.1oz) of milk and 115ml (3.9oz) of milk froth