Collection
Limited editions
Watch name
Medium Size - pilot winder
Dial
black
Reference
4187-9-a1
Case
Material
stainless steel (316L)
Glass
sapphire
Surface
matt
Water resist
3 ATM
Glass back
yes
Size
41.5 mm
Crown
not screwed
Band
leather
Strap width
22 mm
Movement
Manufacturer
Fabrique d´Ebauches Unitas, Tramelan, Switzerland (since 1898) now ETA SA
Caliber
6497
Date
no
Weekday
no
System
hand winding (manual)
Energy
mechanical
Jewels
17
Vibrations
18´000/21´600 A/h