1 Set Mini Air Purifiers Hygienic Easy to Control Air Flowing Help Kids Personal Wearable Air Purifier Fan for Face CoverDescription:Adopted unidirectional cold-flow breathing valve to exhaust air design, this product is scientific and technological, which can make air intake and exhaust become comfortable. Three-speed adjustment of wind speed makes it possible for travel and daily life using, which is convenient and safe to use. Made of ABS material, this product is wear-resistant and long lasting. The length of the fan is 5.2cm, width is 4.3cm, height is 2.6cm. Intelligent breathing and exhaust masks can be used by buckling with a split combination structure. It is suitable for cycling, running, mountaineering and other outdoor activities. Item Name: Mini Air PurifiersMaterial: ABSColor: BlackPower Rating: 0.5WRated Voltage: DC5VBattery Capacity: 500mAhFeatures: Small Size, Easy to Install, ReplaceableSize Details:5.2cm x 4.3cm x 2.6cm/2.05" x 1.69" x 1.02" (Approx.)Notes:Due to the light and screen setting difference, the item#39; s color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes:1 x Mini Air Purifiers(Others Not Included)1 x USB Cable1 x Instructions