Seiko Cal. 6635 - 957

Released in 1993, the Cal. 6635 with design code 957 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-37b6cf38cd8e]

Also known as: Turtle, Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1993

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