Seiko Cal. 4442 - 677

This Spring Drive model from 1993 features a 45mm Two-Tone case. Powered by the 4442 caliber with 22j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-d4386a71d9bb]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1993

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