Seiko Cal. 5631 - 891

The 5631-891 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5631 caliber with 36j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-46547e534062]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

45mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1980

Related Models

• Seiko 4547-165
• Seiko 7046-462
• Seiko 0777-627
• Seiko 7117-106
• Seiko 6326-385
• Seiko 5686-817
• Seiko 5249-944
• Seiko 0796-221
• Seiko 6178-521
• Seiko 7154-730
• Seiko 5698-943
• Seiko 6679-931