uxcell Photo Studio Camera Three Color Digital Black White Grey Balance Cards Product Name : Digital Balance Card;Card Color : Grey, White, Black Card Size : 8.5 x 5.4 cm / 3.3" x 2.1" (L*W);Lanyard Girth : 75 cm / 30" Material : Plastic, Metal, Polyester;Lanyard Color : Red Net Weight : 40g Package Content : 1 x Digital grey color reference card,1 x Pure white color reference card,1 x True black color reference card,1 x Premium Lanyard