Seiko Cal. 6231 - 433

The Seiko 6231-433 represents an important milestone in Seiko's 1991 lineup. Powered by the 6231 caliber with 17j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-22ebd53965a5]

Also known as: Turtle, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Black

Jewels

17j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1991

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