Novelty Lights C7 Twinkle Blue Christmas Lights Set - Indoor/Outdoor Christmas Light String - Christmas Tree Lights - Hanging Christmas Lights - Outdoor Patio String Lights - White Wire - 25 Foot Enjoy our retro fit traditional twinkle C7 light set with a 25' White wire string and 25 transparent twinkle C7 light bulbs during the holidays, on your patio, gazebo, pergola, or special event. This light set is commonly referred as "retro" because it will remind you of the old fashioned type Christmas lighting that you would use on house or Christmas tree reminiscent of the 1950's holiday decorations. Still classic to this day!!! Each classic random twinkle C7 bulb is 7 watts and made for 120V and comes with a transparent glass so that you can see the filament inside of the bulb. Every C7 bulb is rated for a 3,000 hour life span and will fit into any C7/E12 socket base. We highly recommend purchasing an extra box of bulbs to have on hand to be used for replacements when the time comes (ASIN B004P3YRAC). Each set is connectable end to end three times for a total of 75' on one plug! Perfect and versatile for any roofline or outdoor patio application that needs a short length or the ability to have a longer length on one plug. The string is made of a high quality 20 AWG wire and a 5 amp fuse that will stand up to any weather presented and also can be used safely indoors on a Christmas tree. Each C7 bulb is 2 1/4" Tall and 1" wide and made with a Nickel coasted base which prevents any deterioration due to weathering. Our customers satisfaction is our #1 priority and each string set comes with a satisfaction guarantee. If you have any issues all please contact us and we would happy to help in any way that we can! Enjoy the holidays and relax with high quality Novelty Lights! General Mounting Tips: Always mount the string first before screwing in the light bulbs. For Outdoor Patios; We recommend using "aircraft wire" to use as support cable for a clean professional look. If you choose not to use a support wire then a hanging wire will be satisfactory. For rooflines; Mount along the roofline in accordance with our all in all clips (ASIN B004TNDB2I) to mount under shingles or on gutters which creates a strait secure line along your home.