Seiko Cal. 4447 - 767

This Hand-Winding model from 1986 features a 42mm Two-Tone case. Powered by the 4447 caliber with 36j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-b5c3e8f2c54d]

Also known as: Sumo, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1986

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