Seiko Cal. 4438 - 865

The 4438-865 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4438 caliber with 30j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-021fc7e17efb]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1977

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