Seiko Cal. 6635 - 390

The Seiko 6635-390 represents an important milestone in Seiko's 1977 lineup. It features a Cream dial protected by a Sapphire crystal and offers 80m of water resistance. [seikata-wm-1807dbb4eed4]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

80m

Dial Color

Cream

Jewels

34j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1977

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