SLZ Outdoor String Lights 25ft Long with 20 E12 Dropped Sockets - Included 25 C7 LED bulbs, Outdoor and Indoor USE 25 x LED C7 Night Light Bulbs, ETL Approved, Energy Star Approved. Buy 25 x C7 LED bulbs, get 25ft string light sockets free. High Efficacy - Deliver Superior Brightness, Color, and Reliability. Easy to Install - Ideal for Both Indoor and Outdoor Fixtures. Maintenance Free,No RF Interference.Create a Nice Warm Ambient Environment.