Seiko Cal. 6638 - 757

The Seiko 6638-757 represents an important milestone in Seiko's 1999 lineup. It features a White dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-d52e4f85caa8]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1999

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