... 22.5 minutes 2)Day,Night,24Hours 3)2AA battery 4)300ml air freshener Automatic Aerosol dispenser / Air ... 7.5, 15, 22.5 minutesPower supply: 4xAA alkaline batteries Use 120mm refill canOverall dimension: H21 W8.6 ... 3V(AA/LR6 1.5V alkaline battery 4 pcs).4. Four pieces AA/LR6 alkaline batteries can last over ... 2) When the batteries have low power, a battery diagram will appear on the LCD screenPacking: 20 ...