[Model Number] 900.DIAPAL.M
[Country of Origin] Germany
[Manufacturer] Sinn
[Series] 900/R500 Series
[List Price (Tax Included)] ¥1,204,500
[Movement Type] Self-winding (Automatic)
[Movement] SW500
[Dial Color] Gray
[Crystal] Sapphire crystal
[Water Resistance] 200 meters (20 atm)
[Case Shape] Gentleman's size (Men's)
[Case Material] Stainless Steel
[Case Dimensions] Diameter 44.2 mm, Thickness 15.3 mm, Weight 212 g
[Finish] Hairline Finish
[Strap Type] Metal Bracelet
[Strap Material] Stainless Steel (SS)
[Movement] SW500
[Other Features] Chronograph, screw-lock crown, magnetic field protection (high magnetic resistance of 80,000 A/m), day-date display, small seconds, dry capsule & argon gas, inner rotating bezel, Zin Special Oil 66-228

The Diapar System employs a special material for the escape wheel—the most critical component for maintaining a watch’s accuracy—allowing the parts to operate without friction even without lubricating oil. This ensures the movement’s accuracy, particularly that of the escapement, is maintained over the long term.