Seiko Cal. 6643 - 320

Seiko 6643-320

This Automatic model from 1967 features a 40mm PVD Black case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-6b669355cc91]

Also known as: Monster, Bellmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
40mm
Case Thickness
13.5mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Silver
Jewels
22j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1967

Related Models

seikata-wm-6b669355cc91