Seiko Cal. 6379 - 503

This Hand-Winding model from 1979 features a 46mm Hardlex-Coated Steel case. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-d82a1ac3d7dc]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Navy

Jewels

29j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1979

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