Seiko Cal. 5637 - 557

The Seiko 5637-557 represents an important milestone in Seiko's 1996 lineup. It features a White dial protected by a Sapphire crystal and offers 110m of water resistance. [seikata-wm-1d8a3b936b8d]

Also known as: Sumo, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1996

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