Set of 50 LED C3 Mini Christmas Lights Color: Red faceted bulbs with green wire UL Listed for indoor/outdoor use String to string - convenient end connectors allow you to connect multiple sets together Replaceable bulbs have lamp lock technology which keep them secure and also allow you to take them out to replace if needed. Unique Features of LED Saves up to 98% energy Ultra long life Impact/Shake resistant Generates minimal heat Vibrant color will not fade or flake No glass bulbs to replace or break Specifications: Number of lights on string: 50 Spacing between each bulb: 4" Lighted length: 15.25 feet (4.6m) Total Length: 16 feet (4.9m)