This Light My Bricks LEGO Lighting Kit contains everything you need to light up your LEGO 40573 Set This creative lighting kit includes a total of 23 individual LEDs that you can use to bring either model of this festive 2-in-1 set to life. Decorate your Christmas trees as you wish.Choose either the single large Christmas tree to make a grand statement - or the two smaller trees and light each independently with the two separate USB power cables provided. 2-in-1 also means twice as much fun. The incredibly small Light my Bricks Micro LED Bit Lights fit into the smallest LEGO slots, like a LEGO candle. Connected to the Light my Bricks flicker effect circuit board, these decorative candles really come to life. LED bit lights in all the colors of the rainbow, illuminate the included clear round 1x1 bricks, arrange and decorate your chosen tree however you like. And of course, no Christmas tree is complete without a wishing star. Light up yours with a Yellow LED Bit light on the upcoming festive Christmas night. Light My Bricks LEGO Lighting Kits provide an easy way for LEGO fans to customize their models using LED lights. With detailed, step-by-step instructions, anyone can light up their LEGO set. All Light my Bricks kits are plug and play - no electronics knowledge needed. THIS KIT CONTAINS: 1 x Warm White Large Bit Lights with 30 cm cable 2 x Bit Lights Blue with 30 cm cable 2 x Bit Lights Green with 30 cm cable 2 x Bit Lights Yellow with 30 cm cable 2 x Bit Lights Pink with 30 cm cable 2 x Bit Lights Red with 30 cm cable 5 x Micro Bit Lights White with 15 cm cable 8 x Micro Bit Lights White with 15 cm cable 1 x 6-Port Expansion Board 1 x 12-Port Expansion Board 1 x Micro Expansion Board 2-4-Port 1 x Micro Expansion Board 2-8-Port 1 x Flicker Effects Board 2 x Connecting Cables 5 cm 2 x Connecting Cables 15 cm 2 x USB Power Cable 30 cm (Power Source not included 16 x Assorted LEGO pieces for easy assembly.