Many customers around the world will receive their AirPods this week. Apple’s wireless ear buds went on sale last week, though their estimated ship date quickly fell into January. Orders around the globe, including to consumers in the US, Australia, and Europe, are shipping.

The estimated delivery date for many is December 20 or December 21.

Apple opened up sales of the AirPods in over 100 countries. The delivery dates have varied to some degree between markets. Some of the earliest orders are marked for delivery on December 19.

Sales of the ear buds will begin in retail stores on Monday.