Seiko Cal. 5666 - 647

The 5666-647 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-48e385bca12c]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1968

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