This is a quality 316L stainless steel watch case with screw down crown and a screw down case back cover. Crown and a case cover are rubber sealed. Fits TY2846 movement
SPECIFICATIONS:
Crystal- Mineral
Water resistance: 5 ATM
Diameter: 43.5mm
Case thickness: 15mm including a crystal
Width between lugs: 23mm
Bezel diameter: 42mm
Case inside diameter:34.5 mm
Diameter of internal shoulder (visible dial): 33 mm
Case internal height from internal shoulder to the edge: 7 mm
Height between internal shoulder to crystal: 2.5 mm
Height between internal shoulder and stem hole center: 3.2 mm