Sinn EZM 2
Sinn first introduced the Model 403 case as part of the Sinn EZM line in 1997. This would be EZM 2 and, like Sinn EZM 1, featured a left-side crown, rotating bezel, and large rugged case. The dial is black with white luminous markers and red accents. EZM 2 was produced until 2005. The original EZM 2 case measured 41 mm diameter.