Decorative outdoor ornament automatically turns on at dusk and off after 8 hr. 5 in globes randomly pulse. The LED light source, never needs to be replaced. Weatherproof for outdoor use. Patented “Low Glow Technology” extends battery life to over 45 days, to last the entire holiday season.Decorative outdoor LED ornament automatically turns on at dusk and off after 8 hrs5 in globes pulse randomly to provide a unique firefly showEliminate wires, plugs and extension cordsThe LED light source never needs replacedPatented “low glow” technology extends battery life up to 60 days, to last the entire holiday seasonEach ornament uses 3 “AA” alkaline batteries