Seiko Cal. 5631 - 604

Seiko 5631-604

The Seiko 5631-604 represents an important milestone in Seiko's 1975 lineup. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-bb7200aa1958]

Also known as: UFO, Silverwave

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
43mm
Case Thickness
8.1mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Silver
Jewels
30j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1975

Related Models

seikata-wm-bb7200aa1958