Have not way received it despite ordering and paying ten days ago. Opening the order confirmation email and clicking on tracking just says "on its way", no details about location/progress similar to how USPS tracking works. Not sure whether the letters "DHL" along with the order number are meant to identify DHL as the carrier, but if I enter the number into DHL's tracking it sends me to a third party that says the number is for USPS. USPS says this is an invalid tracking number. Cannot tell yet whether it will make the almost new diffuser start emitting fragrance again, or for that matter whether it will ever arrive. Maybe I should have waited longer to receive this item before submitting this review BUT I am submitting it NOW because AH keeps sending me emails asking for a review. I hope this review will result in AH's Customer Service contacting me about whether the shipment is permanently lost.