Lightailing led lights are dedicated to lighting your lego 10255 Assembly Square, this is not only a transition from darkness to light, we also hope to inject the soul into your model, to achieve the effect of one plus one greater than two. Let the Lightailing led light illuminate your building blocks journey and accompany you to explore more construction fun. Our products are packed in high quality boxes, which contain 4 USB light kits, battery box and instructions. Please note that this product does not include lego sets and minifigures that appear in the display images and videos. You can install it easily according to the instruction manual. All accessories are made of safe material. Light up your blocks in the dark to enhance your imagination and creative thinking. We hope that our products can give you a satisfactory experience. Our products have a 2-year after-sales warranty period. If you have any questions during use, please feel free to contact us, we will serve you wholeheartedly.