Seiko Cal. 3861 - 761

The Seiko 3861-761 represents an important milestone in Seiko's 1975 lineup. Powered by the 3861 caliber with 35j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-affa3fa1693f]

Also known as: World Timer, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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