"Drop Shipping" simply means that your item is being shipped to you directly from the manufacturer.
For products where drop shipping is indicated, shipping could take up to 4 weeks. And in these cases, it could also take up to 4 weeks for your tracking number to become available. Estimated delivery times are available on the product page for items that will drop ship.
Please keep in mind, if your order includes more than one item, your order could arrive in multiple shipments.