Air puiifier and ionizer: Air filtration: generate negative ions and release fragrance 3M filtrateTMair filter: captures and retains pollen, dust and dirt Activated carbon filter: absorb smokes, harmful gases and other offensive odors Carbon fiber ionizer: negative ions can revitalize the air by precipitating airborne, particles and substantially reducing the bacteria amount in the air Relieve symptoms of car sickness, headache, asthma, sneeze and allergy Helps relieving tension and promoting better concentration Fragrance box: the aroma beads in the box emit fragrance to enrich the purified and ionized air Rated voltage: 12V DC Power consumption: 3W Ion output: > =2.0 x 1000000 ions/cc Airflow velocity: High speed: 1.8m/s Low speed: 0.8m/s Dimensions (L x W x H): 173 x 119 x 120mm Weight: 0.3kg Effective range: 15 to 25M2