1,Energy saving 2,Long life 3,Environmental purification with anion 4,Smoke, deodorization, sterilization Byme Led LightCreate low-carbon lifeAdvantage1,Energy saving2,Long life3,Environmental purification with anion4,Smoke, deodorization, sterilization Anion concentration >1,200,000PCS/CM³ Warranty:3 Year Size:Φ66mmxH121mm Weight:140G Types of lights:E27