Bjr I had the chance to test this device which is great design, jadore with its changing colors, but that's not all. It is thanks to its efficient room air sensor that is is ultra sensitive. He was quick to change colors depending on the quality of ambient air, it's really impressive. You feel the difference with this device for me is truly a gem of technology and in addition it is quiet because there is a silent mode. I'm really conquered by the air purifier Philips and recommend it eyes closed, I would qualify the tariff that seems a little high
