Seiko Cal. 4447 - 137

This Hand-Winding model from 1970 features a 42mm PVD Black case. Powered by the 4447 caliber with 35j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-0cafa0e9d392]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

35j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1970

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