Microwave-safe mug from a magnetic cookware series that converts microwaves into 100% "safe far-infrared" wavelengths [for microwave use] * Heating beverages * Delicious tea can be made in the microwave with water and tea leaves * Heating sake (hot sake) * Cooking one egg, such as onsen eggs or fried eggs Size: Capacity: 180cc Width: Max. 13cm (including handle) Height: 13cm Weight: Approx. 400g Purchased new in 2023 along with the cookware, and used about 7-8 times as I mainly use other items. ☆ Includes instructions, no box.