These battery operated white 200 led string lights by smart garden smart solar make a great decoration around the home or garden using the latest timer technology they will automatically turn the themselves onfor a 6 hour period and then off for 18 hours simply turn them on when you want them to start and they will continue to cycle this timed onoff pattern every 24 hours until you turn them offr r 200 led lightsr these lights require 4 x aa batteries which are not includedr 6 hours