Sinn 903 Ti II Anniversary: 500-piece limited edition in Grade 5 titanium

Sinn 903 Ti II Anniversary in Grade 5 titanium with slide rule bezel, La Joux-Perret L112 calibre and 20 bar water resistance. Price €3,980

Sinn has introduced the 903 Ti II Anniversary, a column-wheel navigation chronograph issued in a limited edition of 500 pieces. 

The model draws inspiration from the historic 903 J, launched in 1996 to mark the brand’s 35th anniversary.

The historic 903 J (left), introduced for the company’s 35th anniversary, and the new 903 Ti II Anniversary (right)

The 41 mm case, with a thickness of 14.5 mm, is crafted from high-strength Grade 5 titanium and fitted with a bidirectional rotating bezel incorporating an inner logarithmic scale. 

Despite the complexity of the slide rule mechanism, the watch offers water resistance to 20 bar (200 metres / 660 feet), ensured by a screw-down crown and Sinn’s proprietary DSP Technology.

DSP (D = dynamically sealing material compound, S = special lubricating grease, P = precision pairing)  is based on three elements: a specially developed sealing material designed for long-term dimensional stability and elastic recovery; a defined lubricating grease that maintains smooth bezel operation under moisture, pressure and temperature variations; and the precise pairing of sealing components with case parts to guarantee optimal contact pressure within tight tolerances.

The electroplated blue dial features a sunburst finish with galvanically rhodium-plated sub-dials in a tricompax layout. 

The slide rule bezel enables calculations of time, distance and even currency conversions. 

Hand-applied indices, the numeral 12, and the hour and minute hands are equipped with hybrid ceramic luminous elements. 

By integrating luminous pigments directly into the ceramic moulded components, a high concentration of luminous material is achieved, resulting in enhanced brightness and improved legibility in low-light conditions.

Visible through the sapphire case back, the self-winding La Joux-Perret L112 chronograph calibre operates at 4 Hz (28,800 vibrations per hour) and provides a power reserve of at least 60 hours.

Delivered with an additional brown shell cordovan leather strap, the Sinn 903 Ti II Anniversary (ref. 903.100) is priced at €3,980.

Alongside the limited edition, Sinn also unveiled two non-limited stainless steel versions: the 903 St II A (ref. 903.092) with an anthracite electroplated dial and the 903 St II G (ref. 903.093) with a green electroplated dial. Both are priced at €3,650. sinn.de