Seiko Cal. 6635 - 845

This Quartz model from 1970 features a 41mm PVD Black case. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-c07432e8881c]

Also known as: Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1970

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