VNSG 40 LED Photo Clip String Lights for Bedroom Wall Decor┃Battery or Plug In┃Fairy Lights to Hang Pictures Christmas Cards, Wedding Photos┃20ft Soft White┃Photo Lights with Clips for Picture HangingA Wall Plug (Power Adapter which is UL safety certified) is included in the package. Specifications: Total LED lights: 40 beads Total Clips: 40 transparent clips Total length: 20 ft Distance between two clips: 4 in Light color: Warm white Clip size: 1.4 x 0.25 in Power source: 3 AA batteries (not included), for both indoor and outdoor use. or Power Adapter (included in the package) with USB connection, for indoor use ONLY. Take the batteries out, when using USB power. Remote control with timer and 8 modes (combination, in waves, sequential, slo-glo, chasing/flash, slow fade, twinkle/flash, steady on). Here is a tip we would like to share, but you are free to do whatever convenient for you: - Use Push Pins (or thumbtacks) and clear tapes to shape the string lights into words/ letters, or to hang it on the wall. Our Promises: We are proud of our LED Photo Clips String Lights, and we hope you’ll agree. Your satisfaction is always guaranteed with VNSG highly qualified products. We offer 30-Days Replacement or Refund Warranty, 24hrs Friendly Customer Service. If there is any quality problem with the product, please don't hesitate to contact us.