Seiko Cal. 6636 - 775

This Spring Drive model from 1973 features a 44mm Stainless Steel case. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-ba5c98686ab2]

Also known as: Turtle, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1973

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