Seiko Cal. 0771 - 685

This Spring Drive model from 1983 features a 36mm Hardlex-Coated Steel case. Powered by the 0771 caliber with 31j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-bb554ac9f538]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Black

Jewels

31j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1983

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