Very nice little air purifier at a reasonable price. But you should tell manufacturer to include in the manual that you must remove plastic bag on the filter before use. I think many people will not understand this and of course the purifier does not work if plastic is not removed.
The fan is not working stable and there is a vibration that you can feel when you touch on the product. The air flow is low even though in high speed level. In manual it says UV lamp is optional and there is no real indication if it is available or not. You can only see a working blue led.