Bottom diameter:5.5cm. Normally it expects 10 to 25 days to get to worldwide destinations. It needs 1-2 weeks to Japan, 2-4 weeks to Europe, Australia and USA. If you have any problem, please send me message first, we’ll do our best to resolve the problem! If you are unhappy with the item or our service, please send me message before leave feedback, just give me a chance, thank you!