The Sinn 556A RS is a 38.5 mm stainless-steel three-hand sports watch with a Sellita SW200-1 automatic movement, 200 m water resistance, sapphire front and back, and a matte black Arabic-numeral dial with a red seconds hand. It is positioned as Sinn’s entry-level tool watch line.
- Movement
- Automatic mechanical, Sellita SW200-1, 4 Hz (28,800 vph), 26 jewels, hacking and hand-winding, display back
- Caliber
- SW200-1
- Case size
- 38.5mm
- Case thickness
- 11mm
- Case material
- Stainless steel, satin finish
- Case shape
- Round
- Complications
- Hours, minutes, central seconds, date display at ~4:30 position
- Crystal
- Flat sapphire crystal with double anti-reflective coating, sapphire crystal exhibition caseback
- Dial colour
- Matte black
- Lug width
- 20mm
- Water resistance
- 200 m / 20 bar, screw-down crown
