Riess Whistling Kettle 'Classic Plus' with Whistle, 2 l, red, enamel. When the kettle "whistles," it's usually time for a cup of tea. The whistling sound begins as soon as the water boils. The hygienic and heat-conducting properties of enamel, combined with the shape, are perfect for healthy, quick, energy-saving, and safe boiling of water. To make the kettle particularly durable and resistant, it features an additional dark blue inner enamel coating. The kettle is suitable for all types of stoves. Capacity: 2 l, max. fill volume: 1.8 l.