Holiday Essence - Set of 140 Indoor Multi-Color Musical Christmas Lights - Plays 25 Classical Holiday Songs - 8 Function Chaser - Green Wire - 26 Ft Wire Length, 2" Space Between Bulbs BULBS Steady Illuminating Use 1.8V Replacement Bulbs Extra Bulbs included LONG LASTING - 25,000 Hour Average Bulb Life - Safety Fuse - Can connect multiple light strings, A maximum of 4 of these light strings can safely be connected. SAFE - Safety Fused for Your Protection - * USE * For Indoor Use. UL listed Plays the Following 25 Songs: Angels we Have Heard On High-Silent Night-We Three King of Orient Are-Jingle Bells 6.We Wish You Merry Christmas-The Twelve Days Of Christmas-Up On The Housetop-Jolly Old Saint Nicholas-Good King Wenceslas-O Come, All Ye Faithful-Joy to THe World-It Came Upon the Midnight Clear-Santa Is Coming to Down-O Christmas Tree-Rudolph, The Red-Nose Reindeer-What Child Is This-I saw Three Ships-O Little Town Of Bethlehem-God Rest YeMerry, Gentlemen-Deck the Halls-The Herald Angels Sing AND MORE... Angels we Have Heard On High Silent Night We Three King of Orient Are Jingle Bells We Wish You Merry Christmas The Twelve Days Of Christmas Up On The Housetop Jolly Old Saint Nicholas