Sinn - 556 A

Striking form, sparse dial design, superior readability – characteristic SINN features which highlight the similarities between the 556 series and our pilot and navigation cockpit clocks.

The accentuation of the hours, minutes, seconds and the date plus the satinized stainless steel case are what give the watches their sporty yet elegant appearance. The crystal of the 556 watches is made from sapphire crystal, as is the transparent back which provides an intriguing insight into the filigree mechanical movement inside.

Mechanical Movement

• SW200-2 (New movement with 60 hours power reserve)
  
• Self-winding mechanism
• 26 bearing jewels
• 28,800 semi-oscillations per hour
• Seconds stop function
• Anti-magnetic as per DIN 8309

Case

• Case made of stainless steel, satinized
• Sapphire crystal glass in front, anti-reflective on both sides
• Transparent case back made of sapphire crystal glass, anti-reflective on the interior
• Case back screw-fastened
• Crown screwable
• Meet the technical requirements for waterproofness, as set out in standard DIN 8310
• Waterproof and pressure-resistant to 20 bar
• Low pressure resistant

Functions

• Hours, minutes, seconds
• Date display

Dial and Hands

• Matte black dial
• Numbers and indices coated with luminescent colour
• Hour and minute hand coated with luminescent colour

• Case diameter: 38,5 mm
• Band lug width: 20 mm
• Case thickness: 11 mm
• Weight without strap: 65 gramme