The package arrived on schedule. However, the product was damaged; one flaw was immediately noticeable, while another required my trained eye to detect. The user manual instructs filling with water to a "high water level," but there is no such marking. The damage wasn't due to shipping, as the item was very well packaged. Therefore, the damage likely originated with the manufacturer, although the seller should still inspect the product before sending it. The diffuser is about the size of a medium coffee cup. It functions well, and hopefully, it will continue to do so. It has a wooden appearance but is made of plastic. Regardless, it serves its intended purpose.