Seiko Cal. 5633 - 398

Seiko 5633-398

The Seiko 5633-398 represents an important milestone in Seiko's 1980 lineup. Powered by the 5633 caliber with 33j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-1cb3f7dc8870]

Also known as: Helmet, Rally

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
42mm
Case Thickness
11.0mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
90m
Dial Color
Blue Sunburst
Jewels
33j
Frequency
28,800 bph
Power Reserve
72 hours
Year
1980

Related Models

seikata-wm-1cb3f7dc8870