The CR927 are the batteries that need to be replaced if you want the mini figure Darth Vader to light up. There is a youtube video that shows how to replace the batteries.

Stored in a Smoke free pet free environment.

The LEGO 7263 Star Wars Set TIE Fighter is a complete set featuring a Darth Vader mini-fig that no longer lights up. This retired set has 159 pieces and includes a TIE Fighter model, making it a sought-after collectible for LEGO and Star Wars fans. The set was released in 2005 and is packaged in a box, representing a piece of iconic pop culture history. Made in the United States, this LEGO set allows for imaginative play and creative building experiences.