General description The Personal Wearable Air Purifier Necklace is a mini portable freshener designed to release high activity negative ions that actively eliminate harmful particles in the air. It is lightweight and can be worn around the neck, making it convenient for use anywhere, whether at work, school, or home. With a stylish design, it adds a touch of color to your surroundings and makes for a perfect gift for family and friends. 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 Colour: Green Material: PC Size: 7.7 x 5.2 x 3 cm Usage The portable air purifier operates efficiently for up to 24 hours on a single charge and does not require any water or liquid to function. It operates quietly, producing noise levels below 30 decibels, ensuring that it does not disturb your work, study, or sleep. Other