Seiko Cal. 6642 - 788

This Hand-Winding model from 1987 features a 38mm Stainless Steel case. With its 21mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-636ba13e60ae]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1987

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