These string lights are highly efficient ecofriendly and energysaving.Also easy to use with 2 switch buttons: power onoff auto on at dusk auto off by the day mode 4 working modes.Lighting mode: 4 working modes constant light mode slow flash mode fast flash mode intermittent fast flashSafety and durability: Even if some bulbs are broken or removed the other bulbs also can light up for you.Wide application: ip44 waterproof durable string lights can withstand extreme temperatures and rainy windy or damp climates. It can use outdoors and indoors perfectly. Candelabra e12 socket base.Longtime working: solar string lights can provide up to 16 hours of working time after 68 hours of charging. Large solar panels can be mounted on a wall or used as a stake for ground mounting. please press the onoff switch before charging.