Battery lights can be used for so many occasions? parties, table decorations for weddings, room decorations, flower arrangements and many more. The timer option gives you the added flexibility to automatically switch on and off. You don't need to remember to switch them off every night and so prolongs the life of the batteries. Micro LED Wire Battery Lights on silver wire ON / OFF / TIMER modes Requires 3 x AA Batteries (not supplied) Distance from battery pack to first star = 30cm, distance betweem stars = 7cm. Total length = 1.63m Timer Mode - use the switch on the battery pack to select Timer mode, the lights will remain on for six hours before switching off. The lights will switch on automatically the following day at the same time.