Valjoux 7750 TOP
Self-winding, mechanical movement
Shockproof according to DIN 8308
Anti-magnetic according to DIN 8309
Reinforced spring barrel
Damasko rotor with ceramic bearing
Watch is regulated in 5 positions – the movements are fully within the specifications of the official chronometer standard
DC66 Si functions:
Hour, minute, permanent small sweep second
Day/date window with new, modified position
Chronograph: 12-hour counter, 30-minute counter,
Stainless steel, bead-blasted, nickel-free
Ice-hardened to 60 HRC or 710 HV
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 at special request
Crystal gasket resistant to UV radiation
Solid screw back with O-ring Viton gasket
Patented crown and pusher system
Pusher fitted on barrel with minimum radial play, thus permitting minimal locating hole in casing without any scratching between pusher and casing, as well as preventing an intrusion of dirt particles.
Gaskets of crown and pushers are equipped with a permanent lubrication.
All gaskets made of Viton, which is a material that offers premium chemical resistance.
Screw-down crown with protective shoulders
Crown, pushers and casing fully hardened
Bi-directional rotating bezel, exact engagement with patented ceramic ball ratchet elements
Hardened, PVD-coated insert with a hardness of 2500 HV, abrasion-resistant, sealed luminous dot at 12
Insert available in two designs: 1-11 and 5-55
Water resistant according to DIN 8310, pressure-proof up to 10 bar
Matt black, hour markers and triangle at 12 provided with a persistent special paint Red Si imprint at 8 Bilight provided with red special colour
The hour and minute hands are painted black and provided with a white, persistent special paint
The second hand is provided with a red special paint, the minute and hour timers are painted black and provided with a white special paint
Strap and Bracelet:
Water resistant, smooth shrunk-leather straps in black, natural rubber applied inside, red-stitched seam, bead-blasted buckle.
Diameter: 42 mm
Overall height: 14 mm
Bezel diameter: 43.80 mm
Lug width: 22 mm
Weight without strap: 106 grams
2 years manufacturers warranty.