The Gralab Model 300 is an analog darkroom timer designed by GraLab. It has a black color and glows in the dark. The timer has an audible feature that sounds an alarm if needed. It measures 8.5 inches in height, 8.5 inches in length, and 3 inches in width. The timer weighs 4 pounds and is made in the United States. It is ideal for use in darkroom and developing settings for film photography.