Seiko Cal. 4437 - 797

The 4437-797 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4437 caliber with 27j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-dd09fe4375bd]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1998

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