Smart Scent Air Machine 2000m³ Essential Oil Diffuser Aromatic Machine with Fan for Home Hotel Office Item Type: Smart Scent Air Machine Material: Steel Weight: Approx. 5700g/201.1oz Product Size: Approx. 343x230x140mm/13.5x9.1x5.5in Essential Oil Capacity: 500ml Power: 14W Noise: ＜42dba Atomization Volume: Oil concentration adjusted to 95, 4ml/h Operation Mode: Intelligent PCB Installation Mode: flat or external central air conditioner Fragrance Coverage: 2000m³ Battery: CR2032 model, lithium manganese button battery x1, 220mAh (shipped with built in battery) Function: Aroma Applicable Scenarios: Hotels, shopping malls, clubs, hospitals, banks, stations, exhibition halls, car shops, restaurants, cinemas, bars, KTV, Internet cafes, foot bath rooms, leisure places, beauty salons, spas, fitness shops, pet shops, clothing stores, studios, brand stores, sales department, office buildings, offices, meeting rooms, home, libraries and other occasions