These have got to be the easiest and most convenient icicle lights to put up. Battery powered with Noma's Fit & Forget timer, so they can be set to come on for the same 6 hours each day, giving up to 72 days of light from one set of batteries, more than enough to last the Christmas season! Multifunction settings. White wire. Simply hang around your house. Easily attached to gutters using gutter hooks. MPN 6816013WW View All Icicle Lights [specs] Fit & Forget Lights Last Up To 72 Days On One Set Of Batteries. Takes 3x AA Batteries (Not Included) Built In Timer Turns Lights On For Same 6 Hours Each Day. Multifunction Suitable For Indoor Or Outdoor Use (IP44 Rated) 5.1m Of Bright White LED Icicles On White Wire, Plus 0.5m Of Wire To Battery Box Those Who Know Choose Noma! Size: 200 LED - 5.1m