Seiko Cal. 7131 - 710

The 7131-710 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7131 caliber with 24j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-f140d0058ec4]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1985

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