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Damasko Swiss Valjoux 7750 Chronograph with a 60-Minute Stopwatch and 12-Hour Totalizer #DC57SI
The DC57SI is a Swiss Valjoux 7750 powered chronograph watch with a 60-minute stopwatch and a 12-hour totalizer function. The movement in this SI version features some upgraded parts and it has been regulated for accuracy in 5 positions. The stainless steel case size is 40mm diameter x 13.80mm thick. The case is bead blasted, hardened and finished with an abrasion-resistant Damest coating. It is also made with ice-hardened stainless steel. There is an integrated anti-magnetic inner cage to guard against the movement becoming magnetized.The screw-down crown and mechanism is fully hardened and along with a screw-in case back, provides you with a 100-meter water resistance rating. A sapphire crystal with anti-reflective coating on both sides gives you increased clarity when viewing the black dial with white hands and markers. The hands and markers are black while the white dial is fully treated with long lasting CL1 SuperLuminova for reading the time in low light conditions. The day and date window is found at a special position slightly below the center axis. The DC57SI includes black leather strap with white stitching. 20mm lug width.
- Movement:Swiss Valjoux 7750 automatic (self-winding)
- Case:Bead Blasted SS, 40mm x 13.8mm thick. 48mm tip to tip
- Back:Screw-in
- Crystal:AR coated, scratch-resistant sapphire
- Band:Black leather strap with white stitching, 20mm
- Water Resistant:100 meters
- Warranty:2 Years
Product Features
- Swiss Movement:
Valjoux 7750
Self-winding, mechanical movement
25 ruby bearings
28,800 half oscillations/hour
Shockproof according to DIN 8308
Anti-magnetic according to DIN 8309
Reinforced spring barrel
EPS® spring
Screw balance
Damasko rotor with ceramic bearing
Watch is regulated in 5 positions
Case:
Stainless steel, nickel free, bead blasted, entirely hardened, finished with extremely abrasion-proof Damest layer. Ice-hardened to guaranteed 60 HRC or 710 Vickers
Integrated anti-magnetic inner cage, anti-magnetic to 80,000 A/m or 100 mT
Sapphire crystal with anti-reflective coating on both sides, AR coating on the underside only available on special request
Crystal gasket resistant to UV radiation
Solid screw back with O-ring Viton™ gasket
All gaskets made from Viton™ which offers a premium chemical resistance and which is superior to most other materials used in the watch industry
New patented crown and pusher system, crown stem and pusher shafts are machined with minimal tolerances and leave almost no gap between pusher/crown and case, but nevertheless do not scratch. Crown and pushers are also equipped with a permanent lubrication cell which eliminates friction.
Screw-down crown with protective shoulders
Crown, pushers, and tubes hardened to 60 HRC
Water resistant to 10 bars/100 metres according to DIN 8310
Crystal has a secure fit even in case of a sudden negative pressure
Dial:
Dial - completely coated with luminous compound Luminova™ C1 (white) Numbers,
- hour markers, and triangle at 12 painted in matte black
Hands:
The minute and hour hands are painted in matt black with luminous compound Luminova™ C1 (white).
The center seconds and chronograph hands are not luminous.
Strap:
Black leather with white stitching
Dimensions:
Diameter: 40.00mm
Total height: 13.80mm
Lug width: 20.00mm
Weight without strap: 89g
Functions:
Hour, minute, second
Weekday and date on special position
Chronograph: 12-hour counter, 30 minute counter, 60 second counter