Papago S10D Air Purifier

I bought this from Massdrop in Sept. 2018. It comes with two plugs, one that fits into a standard wall outlet and a second cigarette lighter one for your car. The attachment did fit my car's drink cup holder well enough. There is no way to turn off the blue lights as far as I can tell. One wave turns it on low fan power, a second wave activates a high fan level and a third wave turns it off. There is no button to push which means it's quite easy to accidentally turn it off while you're driving if the cup holder is too close to your arm or elbow. The fan isn't too loud and the number displays on the top of the device show useful information. The temperature is always in celcius though and I haven't figured out how to change it to fahrenheit yet. It powers on immediately when I start my car which is nice. Time will tell if it actually does anything! EDIT: It didn't do anything for me. Ended up tossing it in the trash a few weeks ago.