<> The thread diameter is 30.4mm and the outside diameter is 35.5mm. The thickness about the case back included the screw thread is 4.6mm and the thickness about the edge without screw thread is 1.2mm. It do not have the slot for setting the rubber gasket for the seal
<> Please use a vernier caliper to check your original case back to make sure it has the exactly same size as mine. Otherwise you can not use it to fit your watch case well
<> Excellent condition! Never been used before <> Private listing, allow buyers to remain anonymous to other eBay users
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<> Ebay SpeedPAK from China, efficent and safe