zf factory watches 5015-12b40-o52a fifty fathoms 45mm titanium cal.1315 autoamtic mens watch sapphire bezel blue dial canvas strap sports ge, Slivery;brown

[ring mouth] the material is made of sapphire crystal, which has the same hardness and is difficult to polish. [case, dial] fifty fathoms 5015 titanium metal, brushing and sanding on titanium metal is a test for every zf watchmaker, because titanium metal is not only light, corrosion-resistant, and very hard. the blue radial pattern on the dial is the same as the original. contains a calm dark blue style. [plywood]imported jewel bearings are used, and the color is the same as the original crimson. everyone can no longer identify the authenticity of the movement based on the color of the jewel.