These bright clear lights are sure to bring brightness to your home and decorations. If a bulb does burn out， the rest of the string will remain lit. The UL listing allows these to be used both indoor and outdoor， so whether you choose to use the lights on your holiday tree or to decorate your yard， we have you covered. Product Features:Color: clear bulbs/green wireNumber of bulbs on string: 300Two sets of 150 lights for a total of 300 lightsBulb size: miniBulb type: incandescentSpacing between each bulb: 2.5Total lighted length: approx 60Lighted length per set: approx 3024 lead cord3.5 tail cordAdditional Product Features:If one bulb burns out， the rest will stay lit Contains end-to-end connectors which allows you to connect multiple sets together (not to exceed 210 watts) Comes with replacement bulbs and spare fuses UL certified and approved for indoor/outdoor use