Seiko Cal. 6644 - 658

Seiko 6644-658

This Automatic model from 1976 features a 36mm Stainless Steel case. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-78519ab1b11c]

Also known as: Sportsmatic

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
12.5mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
160m
Dial Color
Silver
Jewels
30j
Frequency
28,800 bph
Power Reserve
69 hours
Year
1976

Related Models

seikata-wm-78519ab1b11c