Seiko Cal. 6644 - 231

The 6644-231 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-cbc8045c57b6]

Also known as: Sea Horse, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1975

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