Seiko Cal. 5677 - 635

The Seiko 5677-635 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-c6ed3910220a]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

26j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1981

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