Seiko Cal. 6631 - 613

Seiko 6631-613

This Solar model from 1978 features a 45mm PVD Black case. With its 21mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-472ae7820c42]

Also known as: Turtle, Arnie

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
45mm
Case Thickness
13.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
130m
Dial Color
Champagne
Jewels
36j
Frequency
28,800 bph
Power Reserve
54 hours
Year
1978

Related Models

seikata-wm-472ae7820c42