The volcano smell is amazing as always, but the diffuser must be plugged in at all times in order to work. And for the cost of this device, I’m amazed it does not come with a cord! I have a 2023 car that’s made in Germany, and the plug port is such that the only cord that works is the one that connects my MacBook Pro, which I obviously need for my computer. So to buy a new cord on top of what I’ve spent for the Pura device just leaves me saying UGH. Why can’t it be charged? I don’t want cords flopping around my car either. A long way to go on this design flaw, Pura.