Seiko Cal. 6231 - 552

This Hand-Winding model from 1989 features a 34mm Two-Tone case. Powered by the 6231 caliber with 36j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-ebd8d8704954]

Also known as: Baby Tuna, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

12.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1989

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