Filter and cooling accessories -Air Purifier Cleaner Ion Generator Necklace USB Smoke Remover Office Green Highlights generic brand Air Purifier Cleaner Ion Generator USB Necklace Smoke Remover Office Green Description: Improved air necklace with concentration of ultra-high negative oxygen ions, portable negative ion air collar, adjustable air filter, removing airborne pollutant particles. Achieves 1 cubic meter of air purification by releasing 50 million negative oxygen ions, bringing the same molecules found at natural retreats (beach, waterfall or mountain) to your side. You will feel like in nature. Using state-of-the-art pulsed needle technology to release 50 million negative oxygen ions, the negative ions generated will combine and remove pollutants and other unhealthy particles in the air through their static charge, forming a microscopic shield of health. You can enjoy fresh and clean air at any time. Improve sleep quality; and ultra-quiet operation of 5 decibels, to ensure the quality of your sleep while taking care of your dreams so as not to be disturbed. Environmentally friendly without consumables, the negative ion generator does not need to be replaced for life, saves the worry and effort; and the elegant and beautiful design will be an exquisite gift for your lover. Specification: Material: ABS Plastic Size: 67x22x16mm/2.64x0.87x0.63inch Package Include: 1 Piece Portable Air Purifier 1 Piece USB Cable 1 Piece User Manual Note: 1. Due to the difference in light and screen, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement.