Battery Operated Automatic Air Freshener: Ensures Consistent Refreshing Fragrance All Through The Day And Keeps Your Home Guest-Ready Long -Lasting: Each Refill Unit Guarantees 2200 Air Sprays And Keeps The Room Fragrant 24x7 For Up To 60 Days Flexi Spray: Eliminate Unpleasant Odour By Controlling The Intensity Of The Fragrance By Switching Between 3 Options - 10 Min, 20 Min And 40 Min Suitable To Any Room: Insert The Refill In The Aer Matic Machine And Place It On A Table Or Shelf In The Living Room, Bedroom Or Mount It On The Wall With The Provided Mounting Hole