Seiko Cal. 3840 - 793

This Hand-Winding model from 1971 features a 43mm PVD Black case. Powered by the 3840 caliber with 36j jewels beating at 21,600 bph, it delivers a 43 hours power reserve. [seikata-wm-6c9c38ab9cce]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1971

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