Seiko Cal. 6641 - 364

Seiko 6641-364

This Hand-Winding model from 1968 features a 42mm Hardlex-Coated Steel case. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-6930e85152a5]

Also known as: World Timer, Crown

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
15.4mm
Lug Width
20mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
60m
Dial Color
Burgundy
Jewels
24j
Frequency
28,800 bph
Power Reserve
50 hours
Year
1968

Related Models

seikata-wm-6930e85152a5