Seiko Cal. 5231 - 823

The 5231-823 is a sought-after Solar piece from Seiko's golden era. Powered by the 5231 caliber with 21j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-f4f25bbc0023]

Also known as: Turtle, Bellmatic

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1980

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