Seiko Cal. 6634 - 971

This Hand-Winding model from 1977 features a 46mm Gold-Plated case. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-ddc53dbb8c5b]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1977

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