Detailed Product Description Aerosol dispenser Function: 1, Two "AA" alkaline batteries last over 5 months, 2, panel shouws low battery&when the refill needs to be replaced, 3, 3000 sprays reset button(change aerosol can), 4. Working-hour is resettle according to your specific need (1-99minutes). 5. Environmental "PP" material is recycleable, 6. It can fit all other 300ML aerosol cans.