Sinn 903 St HB, 903 St II, 903 St B E II

Sinn Spezialuhren presents three new iterations of their classic navigation chronograph. The new 903 series is presented in a version that has been technically completely redesigned. Visually recognisable, the navigation chronograph 903 St II and 903 St B E II are available as standard models while the 903 St HB with a light blue sunburst dial is limited to 500 units.

903 St HB

Limited to 500 pieces, this navigation chronograph with its beautiful light blue sunburst dial is the perfect introduction to a completely redesigned series. As a whole, it operates at what could be considered a unique technical level.

At the same time, the functionally designed dial with its fascinating performance characteristics imprints the navigation chronographs in our product range with decades of tradition. For example, the slide rule bezel with its logarithmic scale can be used to calculate times, distances or fuel consumption. 

Of particular note: We use hybrid ceramic luminous elements in the indices, which are meticulously attached by hand, the number 12 and the hour and minute hands. By integrating the illuminating pigments into the respective hybrid ceramic moulded part, we achieve a high concentration of the illuminant. The result is extreme brightness and perfect readability in the dark.

Above all, however, the redesign of the case once again demonstrates our company’s high level of innovation. This case features a silverelectroplated bezel on the inside which can be smoothly operated from the outer diameter of the watch. The watch’s impressive water-resistance of 20 bar in this construction testifies to a feat of engineering that has long distinguished the SINN brand.

The design of a classic navigation chronograph is perfected by the Tri-Compax arrangement of the silver-electroplated counters. The technical highlight of the 903 St HB model is its column wheel chronograph movement, which has a power reserve of at least 60 hours when fully wound. The attachment of the SINN logo as an appliqué is another aesthetically pleasing detail of a consistently sophisticated watch.

903 St II

The navigation chronograph 903 St II is available as a standard model with an electroplated black dial with sunburst decoration and has been elevated to an unparalleled technical level. The functionally designed dial imprints the navigation chronograph in company's product range with decades of tradition. For example, the slide rule bezel with logarithmic scale can be used to calculate times, distances or fuel consumption.

Of particular note is the use of hybrid ceramic luminous elements in the indices, which are meticulously attached by hand, the number 12 and the hour and minute hands. By integrating the illuminating pigments into the respective hybrid ceramic moulded part, a high concentration of illuminant is achieved, resulting in extreme light intensity and perfect readability in the dark.

However, the redesign of the case of the 903 St II in particular once again demonstrates our company's high level of innovation. This case features a silver-electroplated bezel which can be smoothly operated from the outer diameter of the watch. The impressive water-resistance of 20 bar testifies to a feat of engineering that has long shaped the SINN brand.

The Tri-Compax arrangement of the silver-electroplated counters completes the classic navigation chronograph's design. The crowning glory of this model is its column wheel chronograph movement, which has a power reserve of at least 60 hours when fully wound. Watch connoisseurs will immediately recognise that the SINN logo as an appliqué is another fine detail of a consistently sophisticated watch.

903 St B E II

The navigation chronograph 903 St B E II is available as a standard model with a dark blue dial. The functionally designed dial imprints the navigation chronograph in Sinn product range with decades of tradition.

For example, the slide rule bezel with logarithmic scale can be used to calculate times, distances or fuel consumption. Of particular note is the use of hybrid ceramic luminous elements in the indices, which are meticulously attached by hand, the number 12 and the hour and minute hands. By integrating the illuminating pigments into the respective hybrid ceramic moulded part, a high concentration of illuminant is achieved, resulting in extreme light intensity and perfect readability in the dark.

The redesign of the case of the 903 St B E II in particular once again demonstrates our company's high level of innovation. This case features a silver-electroplated bezel on the which can be smoothly operated from the outer diameter of the watch. The impressive waterresistance of 20 bar testifies to a feat of engineering that has long shaped the SINN brand.

The Tri-Compax arrangement of the silver-electroplated counters completes the classic navigation chronograph's design. The crowning glory of this model is its column wheel chronograph movement, which has a power reserve of at least 60 hours when fully wound. Watch connoisseurs will immediately recognise that the SINN logo as an appliqué is another fine detail of a consistently sophisticated watch.

Technical specifications

Sinn 903 St HB

Limited edition of 500 pieces

Case

• Material: Stainless steel, polished / satinized
• Diameter: 41 mm
• Thickness: 14.5 mm
• Band lug width: 22 mm
• Weight without strap: 84 gramme
• 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
• Winding crown screwable
• Meet the technical requirements for water-resistance, as set out in standard DIN 8310
• Water-resistant to 200 meters

Dial and hands

• Light blue dial with sunburst decoration
• Number “12” and indices made of hybrid ceramic luminous elements, meticulously attached by hand
• Hour and minute hand made of hybrid ceramic luminous elements

Movement

• LJP L112
• Self-winding mechanism
• Number of jewels: 26
• Frequency: 28,800 vph (4 Hz)
• Seconds stop function
• Anti-magnetic as per DIN 8309

Functions/Indications

• Hours, minutes, subsidiary seconds
• Chronograph
• Bezel with logarithmic scale and slide rule function

Strap and buckle

• Stainless steel bracelet
• Additional leather strap

MSRP

• EUR 3'650

Technical specifications

Sinn 903 St II

Case

• Material: Stainless steel, polished / satinized
• Diameter: 41 mm
• Thickness: 14.5 mm
• Band lug width: 22 mm
• Weight without strap: 84 gramme
• 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
• Winding crown screwable
• Meet the technical requirements for water-resistance, as set out in standard DIN 8310
• Water-resistant to 200 meters

Dial and hands

• Black electroplated dial with decorative sunburst
• Number “12” and indices made of hybrid ceramic luminous elements, meticulously attached by hand
• Hour and minute hand made of hybrid ceramic luminous elements

Movement

• LJP L110
• Self-winding mechanism
• Number of jewels: 26
• Frequency: 28,800 vph (4 Hz)
• Seconds stop function
• Anti-magnetic as per DIN 8309

Functions/Indications

• Hours, minutes, subsidiary seconds
• Date display
• Chronograph
• Bezel with logarithmic scale and slide rule function

Strap and buckle

• Leather strap
• Stainless steel bracelet

MSRP

• EUR 3'250
• EUR 3'550

Technical specifications

Sinn 903 St B E II

Case

• Material: Stainless steel, polished / satinized
• Diameter: 41 mm
• Thickness: 14.5 mm
• Band lug width: 22 mm
• Weight without strap: 84 gramme
• 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
• Winding crown screwable
• Meet the technical requirements for water-resistance, as set out in standard DIN 8310
• Water-resistant to 200 meters

Dial and hands

• Dark blue dial and luminous ivory coating
• Counters and interior bezel electroplated in silver
• Number “12” and indices made of hybrid ceramic luminous elements, meticulously attached by hand
• Hour and minute hand made of hybrid ceramic luminous elements

Movement

• LJP L110
• Self-winding mechanism
• Number of jewels: 26
• Frequency: 28,800 vph (4 Hz)
• Seconds stop function
• Anti-magnetic as per DIN 8309

Functions/Indications

• Hours, minutes, subsidiary seconds
• Date display
• Chronograph
• Bezel with logarithmic scale and slide rule function

Strap and buckle

• Leather strap
• Stainless steel bracelet

MSRP

• EUR 3'250
• EUR 3'550

For more information, please visit sinn.de