General description This New Hanging Neck Air Purifier is a personal wearable device designed to improve air quality around you. It releases over 5 million negative ions, effectively pushing away pollutants such as smoke, cooking odors, and PM2.5 particles, which can enhance your mood and sleep quality. The compact design allows you to wear it around your neck using the included lanyard, making it convenient for use in various environments, including during travel and in public places with poor air quality. Technical specifications Negative ion concentration: 5 million pcs/cm³ Input voltage: DC 5V Output power: 0.05W Rated frequency: 50 (HZ) Battery capacity: 110mAh Charging time: 40 minutes Usage time: approximately 8 hours Charging type: Type-C Dimensions: 54 x 32 x 17 mm Material: ABS Color: Carbon fiber color Compatibility and accessories Includes: 1 air purifier, 1 lanyard, 1 charging cable Usage To operate the air purifier, simply press the control button to enjoy cleaner air.