Rtgs Micro LED 20 Purple Color Lights Battery Operated on 7ft Long Silver Color Ultra Thin String Wire, with Timer 7' Total Length with 12'' Lead and 4'' Distance Between LED Bulbs Purple LED Lights Color on Silver Wire, Requires 3 AA Batteries (Not Included) Wire Part Totally Submersible but NOT POWER SUPPLY !!! For cosntant lit, slide switch to the right where it states "ON". For turn off, slide switch to the middle. For Timer, slide switch to the left. When timer applies, the lights will stay on for 6 hours and shut off for 18 hours, then relight automatically for 6 hours again.