Philips S3601 Car Air Purifier Function: 1. UV disinfection, 270-280nm wavelength, quickly reduces viruses and bacteria in 5 minutes 2. Nanoscale purification filtration, filtering pollutants and bacteria/viruses with a minimum of 0.004 microns 3. Filter replacement prompt: The top blue light flashes, indicating the need to replace the filter 4. Start with the vehicle. After the vehicle starts, the air purifier will automatically turn on and default to silent mode Features: 1. UV shield, preventing UV radiation from leaking out, sterilizing and disinfecting without harming the human body 2. High quality UV-c LED beads with a lifespan of 21000 hours 3. USB powered, equipped with battery protection system, automatically shuts down after 2 hours of operation 4. Dual mode: Silent mode, Power mode Parameters: Power: 2W Power socket: Type-C Voltage: 5V/1A Adapted filter: SNF60 Replacement cycle: 12 months Power cord length: 1 meter Product size: φ 76x 166mm