Ref. 857.040
The Sinn 857 UTC TESTAF, reference 857.040, is a GMT watch with a 43 mm bead-blasted steel case. A second time zone and date appear on the matte black dial beneath sapphire crystal. The dial bears the TESTAF quality seal. TEGIMENT surface hardening increases scratch resistance on the 12 mm thick case, water resistant to 200 metres. Calibre ETA 2893-2 uses automatic winding. The captive pilot's bezel ratchets in minute increments. Ar-Dehumidifying Technology protects against internal fogging.
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TECHNICAL SPECIFICATIONS
CASE
Diameter
43mm
Thickness
12mm
Lug Width
22mm
Case Material
Steel
Water Resistance
200m
Crystal
Sapphire Crystal
MOVEMENT
Movement Type
Automatic
Caliber
ETA 2893-2
Frequency
28,800 vph (4 Hz)
Jewels
21 jewels
DIAL
Dial Color
Black
FEATURES & COMPLICATIONS
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QUICK FACTS
BRAND
Sinn SpezialuhrenREFERENCE
857.040COLLECTION
857MOVEMENT
AutomaticCALIBER
ETA 2893-2CASE MATERIAL
SteelCRYSTAL
Sapphire CrystalWATER RESISTANCE
200m (snorkeling)FOR WATCH DEALERS
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