Arrived yesterday. Was well packaged and wrapped in a big plastic inflatable sleeve. Even box undamaged. So that's a big plus for the seller! Next and bought some demineralized water to test it. Used it to clean my glasses (and added some alcohol to the water to dissolve the grease. Makes a little bit of sound while operating but that's normal. Pressing the button starts a cleaning cycle sand this all worked perfectly. Glasses were also well cleaned and did the same for all the glasses I could find. Noticed that the water is getting a bit warm; this is fine as cleaning works even better! @Seller: Is there also some heating involved or caused solely by the (piezzo) induced friction? Only point I could think of to improve the product is the lid. It is a bit sharp and was thinking that if it was fitted with some seal liquids that easy evaporate could remain in there. This would also prevent water condensating on the lid (and fall out). I all, happy with it and thanks!