Special necklace air purifier, not only a ornament but also a moving air cleaner, release millions of negative ion to keep you from harmful air. Why not have a try?<br/>Features:<br />[Compact Structure] Mini size, easy to carry and store, enjoying fresh air and breathing freely anywhere anytime.<br />[High Concentration of Negative Oxygen Ion] According to the test, 8,000,000 negative oxygen ions can be released per m³, and no ozone release is detected.<br />[High Power] 15-second rapid and effective air purification, effectively removing PM2.5, formaldehyde, dust, smoke and odor.<br />[Silent Purification] Less than 30dB, ultra quiet, so that it will not disturb your sleep, work and study.<br />[Adjustable Lanyard] Necklace design, free your hands and convenient to hang it on your neck.<br />[USB Charging] Wireless use mode, more convenient for carrying and use.<br />[Wide Application] Filtering harmful substances in the air, this mini negative ion generator can be used in classroom, office, metro, outdoors and any other places with poor air quality.<br/>Specifications:<br />Material: ABS &#43; electronic components<br />Color: White / Black (Optional)<br />Power Supply: USB rechargeable 500mAh lithium battery<br />Input Voltage: DC 5V / 1A<br />Working Current: 0.2A-1.3A<br />Working Power: 0.5W<br />Charging Interface: Micro USB<br />Charging Standby: 1.5h (fully charged)<br />Continuous Operation: About 160 minutes (fully charged)<br />Noise: ≤30dB<br />Applicable Area: ≤10㎡<br />Aion Concentration: 8 million/m³<br />Purified Air Volume: 50m³/h<br />Item Size: Approx. 3.18*5.25*6.16cm / 1.25*2.07*2.43in<br />Item Weight: Approx. 56g / 1.98oz<br />Package Size: Approx. 3.4*8.6*8.7cm / 1.34*3.39*3.43in<br />Package Weight: Approx. 97g / 3.42oz<br/>Packing List:<br />1 * Air Purifier<br />1 * Lanyard<br />1 * USB Cable<br />1 * Users Manual(English)