Review on ZERLA Wearable Necklace USB Car Air Cleaner Portable Air Purifier with Negative Ion Generator - Personal Air Freshener for Adults & Kids (Three Modes) by Robert Hodge

The portable Zerla appears quite small and almost invisible to the first user. But it delivers pretty amazing ion performance. Pros: Small and charged in 2 hours for about 20 hours of use. Three settings allow you to adjust the amount of negatively charged particles emitted - they attract positive particles such as smoke or strong unpleasant odours. Cons: Expensive but worth the price (may have fewer cons and more good value). The only other downside is that it can be damaged if dropped or used with a certain level of care. It's quite interesting that they put it in such a small package. Really smart.