Recently purchased some books from Amazon there was a free delivery option with a special discount.
So I bought three books and they delivered the books before the scheduled time.
Books were in really good condition. They kept updating me through SMS that when the product will be delivered so there was no need to track the product.
I suggest the Amazon website must contain more information of the product, I was searching Lavalier microphone but there was not enough info about the product, therefore, I could not do the purchasing.