Seiko Cal. 4555 - 636

Released in 1970, the Cal. 4555 with design code 636 was part of Seiko's domestic market collection. The Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-140e4fd442fc]

Also known as: Baby Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1970

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