Incandescent-style Super Bright C7 LED (light emitting diode) string light set. Features a solid C9 reflector. Ideal for indoor or outdoor use. String to string connection. Bulbs are break resistant, fade resistant, and chip resistant. Cool to the touch when lit. Includes green wire. UL (Underwriter's Laboratories) listed. Energy Star rated. Bulb Finish: Ceramic Multi Colored Number of Bulbs: 25 Bulbs Bulb Shape: C9 Bulb Type: LED Wire Color: Green Lighted Length: 168 In. Length: 180 In. Type: Constant Bulb Spacing: 8 In. Maximum Set Connections: 90 Sets Indoor/Outdoor: Indoor/Outdoor