How long does it usually take for something to ship from Hong Kong?

I purchased a mic and an iPhone cover from eBay and it says that it has been shipped, but when I clicked on the details of the item it says that it is preparing shipment and the other item says that it has been accepted. The item description says that est.delivery will be on Tues Apr. 2 - Thurs. Apr.18, and so does the other one. I realized that the est, delivery was adding on a day. Should I contact the seller or just wait?

Normally it takes about two to three weeks.more thn likely closer to the third week to receive package from japan. I get a lot of shipments from japan…