Seiko Cal. 6637 - 893

This Automatic model from 1980 features a 45mm Two-Tone case. Powered by the 6637 caliber with 29j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-20753f0c5c42]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

29j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1980

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