Collection
Hercules
Watch name
Chronograph Day-Date
Dial
green
Reference
2657TVDD-a8
Case
Material
stainless steel (316L)
Glass
sapphire
Surface
polished
Water resist
10 ATM
Glass back
yes
Size
47 mm
Crown
not screwed
Band
silicon
Strap width
22 mm
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