PROGRAMMABLE: Smart chip technology control functions and , The spraying fragrance frequency can be set at (1-60 minutes); Providing three working modes from Monday to Friday, Monday to Saturday, and Monday to Sunday; Working time can be set at (1-24 hours), such as 10:00 am (start time) to 5:00 pm (stop time), Interval time and working mode can choose at your preferred fragrance level CANS: the aerosol utilized by the perfume dispenser matches the standard size air freshener refill cans. Compatible for , , , , etc. You can get suitable fragrance refill cans on or your local store. (Note: please reset the automatic pressing lever before use, otherwise the automatic refill cans not be installed BATTERIES OPERATED SMELL SPRAYER: the dispenser requires 2 pcs AA batteries (not included) to operate to bring continuous and long-lasting fragrance into your bathroom, room, toilet, bedroom, office, gym, and so on. And with mounting screw fittings for easy installation WALL MOUNTED OR FREE STANDING: The programmable air freshener can be mounted to your preferring height with screws included, or you can just put the metered fragrance dispenser to stand on your bedroom desk, office table, etc, Automatically fragrance into the room to purify the air and smelly odor size: 118 x 94.5 x 250.6mm Material: ABS colour: black+white Package Contents: 2 x Air Freshener Dispenser(without battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.