Seiko Cal. 3846 - 487

This Hand-Winding model from 1976 features a 37mm Hardlex-Coated Steel case. Powered by the 3846 caliber with 30j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-d9dea77b52f9]

Also known as: World Timer, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Black

Jewels

30j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1976

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