Collection
Hercules
Watch name
Chronograph Day-Date
Dial
black
Reference
4557TVDD-s1
Case
Material
stainless steel (316L)
Glass
mineral
Surface
mixed
Water resist
10 ATM
Glass back
yes
Size
47 mm
Crown
not screwed
Band
silicon
Strap width
22 mm
Variants
4559TH-s1
Movement
Manufacturer
Valjoux, Les Bioux, Switzerland (since 1901) now Member of ETA SA
Caliber
Valjoux 7750
Date
yes
Weekday
yes
System
automatic
Energy
mechanical
Jewels
25
Vibrations
28´800 A/h
Special
Only small quantities available