Product Material: ABS+PC Style: Chain style, lanyard style Applicable Area: Less than 10 sq m Air Volume: 5-150 cubic meters per hour Rated Frequency: 50 Hz Battery Life: Up to 30 hours at high setting, up to 60 hours at low setting Charging Method: TYPE-C Size: 8 x 3.5 x 2.3 cm Colors: White, Black Quantity: 1 piece Package Contents: 1 x Hanging Neck Air Purifier Features: 1. Portable and easy to use: This lightweight air purifier can be worn around the neck using the included chain or lanyard, or placed on a bedside table for convenient use. 2. Air purification: Releases negative ions to help improve air quality in personal spaces. 3. Filter-free design: Utilizes electrostatic cleaning technology to capture airborne particles without the need for replaceable filters. 4. Personal air protection: Helps reduce airborne pollutants in environments with poor air quality, ideal for travel or public spaces. 5. Rechargeable battery: Equipped with a built-in rechargeable battery. The indicator light turns red during charging and blue when fully charged. Blue light remains on during operation. Recommended to charge while powered off.