- Case made of stainless steel, bead-blasted
- Case made with TEGIMENT Technology and therefore especially scratch-resistant
- Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
- Magnetic Field Protection up to 80,000 A/m
- Nickel-free case back
- Captive pilot's bezel with minute ratcheting
- Sapphire crystal glass
- Pressure-resistant to 20 bar
- Low pressure resistant
Shipping costs, taxes and customs duties
Price incl. tax plus shipping costs
New watch deliveries are free of shipping costs within Germany. For delivery to European Union (EU) Member States, we charge EUR 80.00 and for deliveries to all other countries we charge EUR 120.00 shipping costs. For bracelets and accessories we charge EUR 6.50 within Germany, EUR 30.00 to European Union (EU) Member States and EUR 50.00 to all other countries.
Shipping costs for service and spare parts can be found in the service price list.
For deliveries within the European Union (EU), the VAT rate of the supplier country is charged. Deliveries outside the EU are shipped VAT-free.
For deliveries outside the EU, additional customs duties and fees may apply. Please check the relevant customs regulations with the respective customs authorities.
857 SEK Frankfurt am Main
The Frankfurt am Main special police unit (SEK – Spezialeinsatzkommando) was officially founded in 1974. On the occasion of its 40th anniversary, Sinn Spezialuhren and the SEK Frankfurt am Main have come together to develop the SEK 857 SEK Frankfurt am Main special-operations watch.
Forty years and counting: SEK Frankfurt am Main decided to mark the occasion with a special watch. To develop the watch, SEK Frankfurt am Main, which has earned an exceptional reputation throughout and beyond Germany, turned to Sinn Spezialuhren without hesitation. After all, Sinn Spezialuhren is also highly respected throughout the world, particularly for its timepieces developed purely with the specific functionality and operational requirements in mind. Close collaboration was therefore an obvious solution. The two Frankfurt institutions also have a close association with the city of Frankfurt am Main. This is expressed symbolically on the dial of the special watch with an adapted coat of arms of the SEK – the Frankfurt eagle and sword.
The operational requirements formulated by SEK members through a specifications book and implemented by Sinn Spezialuhren served as the technical basis for the development of the 857 SEK Frankfurt am Main special edition. The case is made of bead-blasted stainless steel and has a diameter of 43 mm. The surface was hardened with TEGIMENT Technology, ensuring that the case is scratch-resistant. The range of features also includes Ar-Dehumidifying Technology for greater functional reliability and freedom from fogging as well as magnetic field protection of up to 80,000 A/m. The rotating captive pilot’s bezel with minute ratcheting is securely connected to the case. The watch is fitted with high-quality sapphire crystal glass, pressure-resistant to 20 bar (= 200 m water depth) and resistant to low pressure.
The 857 SEK Frankfurt am Main special edition was created on a one-off basis and was not freely available for purchase. As an unofficial piece of equipment, it was available exclusively to active or former SEK members.
Special characteristics
Technical details
Mechanical Movement
SW300-1
Self-winding mechanism
25 bearing jewels
28.800 semi-oscillations per hour
Seconds stop function
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309
Self-winding mechanism
25 bearing jewels
28.800 semi-oscillations per hour
Seconds stop function
Shock resistant as per DIN ISO 1413
Anti-magnetic as per DIN 8309
The information on the mechanical movement corresponds to the current production situation in Frankfurt am Main. Due to technical changes, it may happen in individual cases that stock items of our sales partners deviate from this information.
Case
Case made of stainless steel, bead-blasted
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened, nickel-free
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant to 20 bar
Low pressure resistant
Sapphire crystal glass in front, anti-reflective on both sides
Case back screw-fastened, nickel-free
Crown screwable
Meet the technical requirements for waterproofness, as set out in standard DIN 8310
Pressure-resistant to 20 bar
Low pressure resistant
Functions
Hours, minutes, seconds
Date display
Pilot’s bezel with minute ratcheting and luminous key mark
Date display
Pilot’s bezel with minute ratcheting and luminous key mark
SINN Technologies
TEGIMENT Technology, therefore especially scratch-resistant
Captive bezel
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Magnetic Field Protection up to 80,000 A/m
Captive bezel
Ar-Dehumidifying Technology enhances functional reliability and freedom from fogging
Magnetic Field Protection up to 80,000 A/m
Dimensions and Weight
Case diameter: 43 mm
Band lug width: 22 mm
Case thickness: 12 mm
Weight without strap: 90 gramme
Band lug width: 22 mm
Case thickness: 12 mm
Weight without strap: 90 gramme
Dial and Hands
Matte black dial
Numbers and indices coated with luminescent colour
Hour and minute hand coated with luminescent colour
Numbers and indices coated with luminescent colour
Hour and minute hand coated with luminescent colour
