Seiko Cal. 6643 - 357

Seiko 6643-357

This Hand-Winding model from 1979 features a 40mm Gold-Plated case. Powered by the 6643 caliber with 35j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-6a0e29219e73]

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
40mm
Case Thickness
13.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
190m
Dial Color
Black
Jewels
35j
Frequency
28,800 bph
Power Reserve
61 hours
Year
1979

Related Models

seikata-wm-6a0e29219e73