Cooling Filter and Accessories -USB Smoke Remover Portable Air Purifier Ion Generator Necklace Gray Highlights generic brand USB Smoke Remover Portable Air Purifier Ion Generator Necklace Gray Description: enhanced air with ultra-high negative oxygen ion concentration, wearable negative ion air collar, adjustable air filter, removing airborne pollutant particles. Achieves 1 cubic meter of air purification by releasing 28 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 28 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, 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, avoids worries and efforts; and the elegant and beautiful design will be an exquisite gift for your lover. Specification: Material: ABS plastic Size: 66.7x24.7x16.1mm/2.63x0.97x0.63in Battery capacity: 250mAh Current: 25mA Package includes: 1 piece portable air purifier 1 piece USB cable Manual User's Quantity 1 Piece Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-3mm differences due to manual measurement.