Style Description: Stainless steel back cover with transparent bottom

Color style: electroplated rose gold, electroplated gold, electroplated black, silver steel original color

Diameter of the bottom cover: 35.5MM

Bottom cover thread ring diameter: 30.44MM

Bottom cover thickness: 5.1MM

Vernier caliper measurement, plus or minus 0.2~0.5MM

Mirror material: glass

Suitable for store 40MM SUB vintage case