Seiko Cal. 5631 - 648

The 5631-648 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5631 caliber with 36j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-1896d6468168]

Also known as: Shogun

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

15.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

36j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1995

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