Kurt Adler battery operated string lights include one set of 50 dual-colored LED lights (warm white & multicolored) with two possible wire colors�silver or green�chosen at the shipper's discretion. The lights feature 4-inch spacing between bulbs and are controlled with an 8-function remote and timer, offering a 6-hour on/18-hour off cycle. The total string length is 17.25 feet, with a 24-inch lead wire. Designed for both indoor and outdoor use, the string has a straight-line construction that ensures the remaining lights stay on if one bulb fails. The lights require 3 AA batteries (not included) and have non-replaceable bulbs. Multiple sets cannot be connected.