Mini Air Purifiers Healthy Breathing Multiple Uses Replaceable Smart Electric Air Face Cover Fan for Face CoverDescription:Freely switching between soft mode and sports mode, this product is easy to control and replace. Featuring its light weight and small size, this product is convenient to carry outside, which is easy to use with its replaceable design. Made of plastic material, this product is wear-resistant and long lasting. The length of this product is 8.2cm, width is 4.2, height is 2.2cm.It is suitable for prevent dust, smoke, pollution, ash and so on. This product has 2 times the air volume and 3-6 hours of endurance time. Item Name: Mini Air PurifiersMaterial: PlasticVoltage: 3.7vBattery Capacity: 650mAhFeatures: Small Size, Easy to Install, ReplaceableSize Details:8.2cm x 4.2cm x 2.2cm/3.23" x 1.65" x 0.87" (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