Wearable air purifiers are useful devices if you understand what they are built for. If AQI crosses 400, these devices are of little use.
Wearable air purifiers simply cannot cope with extreme outdoor pollution, and the Atovio Pebble is no exception. It is not built to protect when AQI is 400+.
She said: "[I]n parks and across the town they are using balaclavas to hide from the police and it's intimidating. People don ...
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