Description: Silent operation makes it will not affect your rest and work. Tens of millions of negative ions make it have high efficiency and strong power. The wide range of applications allows it to be used in a variety of scenarios. And the small size and light weight make it very convenient to carry and store. Made of ABS material, it is very durable to use. The length of this product is 11.3cm, the width is 3.8cm and the height is 3cm. It is suitable for bedroom, car, bathroom, living room, kitchen and so on. It can maintain a stable release for 24 hours a day. Item Name: Negative Ion Air Purifier Material: ABS Plug Type: USB Plug Product Noise: 0.1 dB Rated Frequency: 23Hz Product Air Volume: 50m/h Scope Of Application: 30-40 Product Process: Negative Ion Features: Plug-in Type, Remove Smell, Long-lasting Product Color: Black, White, Pink, Green, Purple, Orange, Blue Size Details: Size: 11.3cm x 3.8cm x 3cm/4.45" x 1.5" x 1.18" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Negative Ion Air Purifier 1 x User Manual