Pip-Boy device, Fallout 3 theme, worn on arm, retro-futuristic design, green monochrome screen, chunky buttons, sturdy plastic casing, distressed texture, post-apocalyptic setting, rust and scratches, ambient occlusion, dim lighting, vault dweller outfit, blue and yellow color scheme, 3/4 view, detailed background with rubble and destroyed buildings, soft light, atmospheric perspective, wide-angle lens.