Diameter: 11cm Height: 8.3cm Weight: Approximately 320g As you can see, it has depth and a unique proportion. I only had tea with it a little bit a quarter of a century ago, so... I'm sorry I can't review things like how to use a chasen (tea whisk). I wanted to learn, but I don't have time ( ；∀；) I'll take pictures with tea utensils I collected for reference in pottery, so please refer to those. It is said that "Bizen pottery doesn't let water spoil," and it's a popular type of pottery for flower vases because water lasts longer. Because it's fired longer than kilns in other regions, it's tightly baked, and water doesn't leak even without glaze. It's said that coffee tastes better when drunk from it, and I've been curious about it for a long time, so I finally bought a teacup for myself (^。^) After using it for about 3 days, I wasn't particularly impressed... But when I tried to drink tea from my original teacup (a novelty from a sushi restaurant) again, I was surprised at the difference in taste!! I can't go back! I'm hooked on Bizen pottery. Please, try using it for several days in a row ^_^ This teacup is a new, unused item (dead stock). It has a mark, perhaps "平 (hei - flat/peace)". The kiln is unknown. It feels like the center of gravity is a little lower. It feels heavy for its size and thickness. Perhaps it's because of the degree of baking is different from other teacups! The ash glaze has a good appearance, and the inside has various colors like the background of The Scream. I think it's a teacup that will make you say, "It's better than it looks in the photos!"＾＾