Seiko Cal. 6636 - 611

Released in 1975, the Cal. 6636 with design code 611 was part of Seiko's domestic market collection. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-562be5cfa787]

Also known as: UFO, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1975

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