Features: 1. Remove formaldehyde |, removing odor, removing dust, and smoking smell 2. Two strokes 3. 360 ° surround absorption 4. Type-C charging cable 5. Easy to disassemble and clean Specification: Material: ABS+resin ( ceramic high temperature is easy to clean) Rating input: DC5V1A Rated power: 5W Battery capacity: 2000mAh Negative ion concentration: 1000-15 million/㎠ Scope of application: around 10-20 square meters Use after full charging: 3-4 hours Size: 13.6x9cm Package Included: 1 x filter 1 x filter sponge 1 x Perfume (random taste) 1 x Type-C charging cable