Case
Size: 40 x 40 mm
Dial opening: 32,15 mm
Thickness: 11,70 mm
Italian tortoise shell Acetate: handmade polished finish
Lugs / Bezel / Crown / case-back: polished 316L stainless steel
Polished stainless steel crown in trapezium shape engraved with BRISTON blazon
Ultra-resistant sapphire glass - 2mm thickness
See-through case-back with K1 glass
Water resistance to: 50m/5ATM
MovementAutomatic movement NH38A manufactured by Seiko
Mechanical with automatic winding with ball bearing (Bi-directional)
Rotor with “Côte de Genève” decoration
Caliber: 12’’’
Frequency: 21’600 vibrations/hour (3Hz.)
Jewels: 24
Power reserve: up to 41 hours
Functions: Hours, minutes, central seconds, opening on balance wheel at 9 o’clock
DialBlack semi-glossy
Polished stainless steel applied indexes in arrow shape
Double applied indexes at 12 o’clock & white small lines (minutes indication)
Opening with diamond-cut bevel at 9 o’clock
HandsPolished rhodium-plated Dauphine style Hour & Minutes hands
Polished rhodium-plated central seconds hand
StrapExclusive VINTAGE Chocolate calfskin Leather strap: genuine leather with chocolate stitching
Traditional & interchangeable 2-part strap with pin system to remove the strap
Length: 75mm/115mm Width: 20 mm
Leather loop - BRISTON engraving on the steel pin buckle
Product Code:Automatic HMS OPEN 18740.SA.TI.1.LVC