Seiko Cal. 6639 - 853

Seiko 6639-853

This Automatic model from 1979 features a 37mm PVD Black case. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b8502f04242e]

Also known as: Turtle, Flighty

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
37mm
Case Thickness
11.7mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
100m
Dial Color
Navy
Jewels
30j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1979

Related Models

seikata-wm-b8502f04242e