IMPERIAL KNIGHTS: KNIGHT DOMINUS
It's a large plastic miniature kit (1 miniature) featuring a massive bipedal war machine (a "Titan-class" Knight). The model on the box art is painted in a dark navy blue and red color scheme with copper/bronze trim, checkered heraldic patterns, and House iconography (eagle and horse/wolf crests visible on the leg armor).
The Knight Dominus is the biggest of the Imperial Knight variants — armed with twin volcano lances or thermal cannons on the arms, and a twin siegebreaker cannons/shieldbreaker missiles on the carapace. It's a Forge World-scale kit, imposing and heavily detailed.
Box shows front and side panel views of the painted model, set against a Gothic cathedral ruins backdrop typical of WH40K aesthetic. Games Workshop product.
Box Contents: