1681 Chestnut

From JEANRICHARD -

Courtesy of JEANRICHARD

Here are the specs -

Sandblasted brown PVD-coated 
stainless steel case
44.00 mm
Height: 11.27 mm
Antireflective sapphire crystal
Sapphire case-back, screwed-down 
Water-resistant to 100 m
Manufactured JR1000 movement, 
self-winding
Calibre: 11 1⁄2’’’
Frequency: 28,800 vibrations/ hour (4 Hz) 
Jewels: 27
Power reserve: minimum 48 hours 
Functions: hour, minute, second, date 
Black matt dial
Black nickel indexes and numerals
Black hands with beige
luminescent material
Black rubber strap
Black PVD-coated stainless steel
folding buckle