Radiomir Chronograph Case set Fit Seagull TY2901,2902,2903 & ST1901,1902,1903

Case Material : 316L Stainless Steel Case with 3.5mm Dome Sapphire Crystal (Thicken)

Crown Material : Stainless Steel Crown

Case Back : Stainless Steel Screw Down Display Case Back with Sapphire Crystal

Case Size :  Appox. 42.5mm Exclude Crown

Thickness : Appox. 15mm

Size of Lugend : 24mm

Diameter of bezel is 37mm

Inside Diameter of case is 35mm

Internal Shoulder diameter is 28mm 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, 38mm

Diameter of Case Back Thread is 35.3mm

Diameter of crown is 7mm

Crystal Diameter 34mm

Water Resistant : Tested 5 ATM

2 Spring bars & Movement Holder are included

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