Seiko Cal. 6643 - 423

Seiko 6643-423

The Seiko 6643-423 represents an important milestone in Seiko's 1982 lineup. The Inner Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-e35245c4b923]

Also known as: Monster, Golden Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
10.2mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
130m
Dial Color
Black
Jewels
32j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1982

Related Models

seikata-wm-e35245c4b923