1. Main functions: air purification\formaldehyde removal\odor removal\parking number plate 2. Power supply method: Type-C 3. Lithium battery: 300mAh 4. Built-in smart sensor chip, real-time monitoring of car start and stop status, comfortable without wasting essential oil, durable 5. Made of alloy, no fear of high temperature 6. Solar power storage, three-speed mode, as dark or light as you like 7. Music atmosphere light, different moods, different beating plans 8. Hidden number plate, practical and space-saving, open or hide with one click 9. Separate design, the perfume bottle and base adopt a clutch module combination structure, no oil leakage, easy and convenient to change perfume (perfume not included) 10. Product size: 200x55x39mm 11. Product weight: 175g