Seiko Cal. 5637 - 891

Seiko 5637-891

The 5637-891 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 5637 caliber with 32j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-f5252fdc04bd]

Also known as: Crown, Baby Tuna

Specifications

Movement
Kinetic
Case Material
Stainless Steel
Case Width
36mm
Case Thickness
8.2mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
140m
Dial Color
Cream
Jewels
32j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1967

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