Seiko Cal. 6641 - 764

Seiko 6641-764

This Hand-Winding model from 1990 features a 37mm Two-Tone case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-06ef11d86829]

Also known as: Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
37mm
Case Thickness
13.3mm
Lug Width
18mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Champagne
Jewels
33j
Frequency
28,800 bph
Power Reserve
52 hours
Year
1990

Related Models

seikata-wm-06ef11d86829