Product Details This air purifier can filter 99.97% of dust. Filter PM 2.5 of air pollution (pollution rate). Suitable for those who suffer from extreme air environment, such as nasal congestion, coughing, sneezing, and different occasions, such as workplace, bathroom, living room, bedroom, office, etc. This air purifier is also suitable for allergy and asthma patients, it will be more efficient if you put it close to you. We strive to design a sturdy air purifier suitable for home use, so it is made of sturdy ABS material, with the characteristics of light weight and easy to carry. It is a very practical and portable mini air purifier. Ultra-quiet air purifier, the noise is less than 36 decibels when working, and it is a good choice for improving insomnia when used for sleep disorders. There will be no more noise disturbing your sleep when using our purifier. Specifications: Color: White Material: ABS Voltage: DC5V-9V Product weight: 1.3 pounds Noise index:? 36dB Control type: portable 7.1 x 5.5 x 2 inches. Air purification speed: 50 cubic meters per hour. Applicable area: about 11-20 square meters. Power supply: USB cable (included). Scope: bedroom, desktop, car, vehicle, pet, toilet, etc. Package Included: 1 x Air Purifier. 1 x USB Cable. 1 x Instruction Manual.