Seiko Cal. 6640 - 648

Seiko 6640-648

This Automatic model from 1994 features a 44mm Titanium case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-e36f7869e706]

Also known as: Turtle

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
44mm
Case Thickness
12.7mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
70m
Dial Color
Green
Jewels
34j
Frequency
36,000 bph
Power Reserve
68 hours
Year
1994

Related Models

seikata-wm-e36f7869e706