Seiko Cal. 6231 - 443

The Seiko 6231-443 represents an important milestone in Seiko's 1965 lineup. Powered by the 6231 caliber with 28j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-e04cbe38bf63]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

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