Brand Norqain Caliber Number NN20/1 In-House? No COSC? Yes Diameter 26mm (confirm in the comments below) Thickness 4.99mm (confirm in...
Tudor MT5402
Manufacturer Tudor Caliber Number MT5400, MT-5400 In-House? Yes Diameter 31.8mm Thickness 6.5mm Vibrations Per Hour 28,800 bph (4Hz) Lift Angle...
Manufacturer Tudor Caliber Number MT5402, MT-5402 In-House? Not exactly Diameter 26mm Thickness 6.5mm Vibrations Per Hour 28,800 bph (4 Hz)...