Seiko Cal. 4431 - 602

Released in 1970, the Cal. 4431 with design code 602 was part of Seiko's domestic market collection. Powered by the 4431 caliber with 27j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-58092ce27cce]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

130m

Dial Color

Champagne

Jewels

27j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1970

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