Fully automatic multi-function mechanical watch

product training:
Color: 1# black surface black steel belt, 2# blue surface black steel belt, 3# black surface silver steel belt, 4# white surface silver steel belt, 5# black surface black belt, 6# blue surface black belt
Thickness: 10mm
Type of movement: Machines
Crown type: Spiral crown
Buckle Style: Double Butterfly Snap/Pin Buckle
Watch Button Material: Stainless Steel
Waterproof performance: 30 m
Mirror material: mineral reinforced glass mirror.