Sinn Spezialuhren 544 RS

The Sinn 544 RS, reference 544.011, has a bead-blasted steel case measuring 38.5 mm across and 10 mm thick, water resistant to 200 metres. The case has a see-through back and resists low pressure. A red central seconds hand passes over the matte black dial beneath sapphire crystal. Hand-applied hybrid ceramic hour markers are luminous beside the date display. Calibre SW200-2 is self-winding and has a 60-hour power reserve. The crown has Sinn's D3-System.