Seiko Cal. 6694 - 641

The 6694-641 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-0e9e2ec46242]

Also known as: Turtle, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1965

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