Seiko Cal. 6178 - 635

Released in 1975, the Cal. 6178 with design code 635 was part of Seiko's domestic market collection. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-74a607dba4eb]

Also known as: Rally, World Timer

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1975

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