400ml Smart Bluetooth Fragrance Machine Electric Aroma Essential Oil Diffuser for Home Hotel 100‑240V Black US Plug Item Type: Aroma Diffuser Battery: 1 x CR2032 Lithium Manganese Button Battery, 220MAH (built in battery) Product Size: Approx. 21 x 15.5 x 7.5cm / 8.3 x 6.1 x 3in(L x W x H) Weight: Approx. 1068g / 37.7oz Mode: 5 time periods, concentration setting, multiple stage timing, Bluetooth remote control Function: Fragrance Applicable Range: 500-1000m³ Appearance: Square Shape Noise: 36-45dba Timing Function: Over 8 hours Fog Outlet: 1 Inner Tank Material: PP Style: Wall mounting, placing Capacity: 400ml (without liquid) Applicable Scene: Hotel, Family, Hot Spring Resort, Sauna, SPA, KTV, Leisure Club