Seiko Cal. 5231 - 807

The Seiko 5231-807 represents an important milestone in Seiko's 1990 lineup. Powered by the 5231 caliber with 35j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-ed43d82b54ad]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1990

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