Stainless Steel Watch Case Set fit Seagull TY2901,2902,2903 & ST1901,1902,1903 Speedmaster Chronograph

Case Material : 316L Stainless Steel Case with 4mm Dome Crystal (Thicken)

Crown Material : Stainless Steel Screw Down Crown

Case Back : Stainless Steel Screw Down Display Case Back

Case Size :Appox. 41.5mm Exclude Crown

Thickness : Appox. 15.5mm

Size of Lugend : 20mm

Diameter of bezel is 40mm

Inside Diameter of case is 32mm

Internal Shoulder diameter is 29mm for visible dial

Internal Height of Case from shoulder edge is 6mm

Height Between center Stem Hole and internal Shoulder 3mm

Internal Height between Crystal and shoulder 3mm

Back Cover height which includes A Thread is 4mm

Back Cover Height excluding The A thread is 2.7mm

Diameter of Case Back Cover is, 36.8mm

Diameter of Case Back Thread is 33.3mm

Diameter of crown is 5.8mm

Crystal Diameter 31.8mm

Water Resistant : Tested 5 ATM

2 Spring bars & Movement Holder are included

( Please double check your Movement Model before you buy this item ! )

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