SGS Certified Lab-Grade Purification. 99.54% TVOC Removal. 99.99% PM2.5 Removal. Runs as low as 45 dB in Silent Mode, about as quiet as gentle rainfall. Real-Time Filter Monitoring with Replacement Reminders. Remote Control, Auto Purification. Auto-Adjusts Speed Based on Print Type. Uses a built-in 2.4 kg high-density modified activated carbon filter that's long-lasting and durable. One filter lasts up to 9 month.* For semi‑enclosed spaces with windows or external ventilation, try Exhaust Fan Kit. *Based on real user data, assuming 2 hours of use per day, with time split across modes as 25% Strong Mode, 35% Standard Mode, and 40% Silent Mode. Filter lifespan by mode: Strong Mode (300 hrs), Standard Mode (540 hrs), Silent Mode (1,700 hrs). Actual lifespan may vary based on different printing time, modes, and use habits.