General description The Personal Wearable Air Purifier Necklace is a mini portable air freshener designed for both adults and kids. It releases high activity, small particle size negative ions that actively kill most harmful bacteria in the air. This lightweight and stylish device can be worn around the neck, making it convenient for use anywhere, while also adding a touch of color to your environment. Technical specifications Input Power: 0.1W Input Voltage: DC 5V Negative Ion Concentration: 10,000,000 pcs/cm³ Bacterial Reduction Rate: More than 96% Frequency: 2KHz Charging Method: USB Battery: 3.7V 200mAh Product Weight: 30g Color: Green Material: PC Size: 7.7 x 5.2 x 3 cm Installation Simply wear it around your neck using the included lanyard. Usage Charge for 0.5 hours for up to 24 hours of effective air purification. No liquid is required for operation; it starts purifying the air immediately. Operates quietly below 30 decibels, ensuring no disturbance during work, study, or