Accessories Kit: Package contains string lights, expansion boards, connecting cables, battery case (batteries not included), etc. 

.Functions: The led lights will illuminate your building block model in the dark. They can   add more charm to your model and show your building blocks to your families and friends.

.Powered by: Powered by USB or batteries (Batteries need to be brought by yourself). The voltage should be less than 5V to avoid burning.Installation Tips: While install, please don't over pull, bend or shake the parts, to avoid any damage.

.Please Note:1. Only LED Light Kit, Lego Set Not Included! 2. The lighting kit is not made by Lego. 3. If you need instructions or have any questions, please contact us.