Smart Moka's knob for the deaf, Eco allows you to know when the coffee is ready just by looking at it. It replaces the standard knob simply by unscrew it. Thanks to a metal coated with thermochromic resin, it gradually changes color upon reaching a specific temperature. When the coffee is ready, the temperature of the internal Moka's parts will rise up, as so Eco, making it changing color.
It’s named after the nymph Echo. She was an oread unable to speak in Greek mythology.