Seiko Cal. 3865 - 630

This Hand-Winding model from 1966 features a 46mm Hardlex-Coated Steel case. Powered by the 3865 caliber with 17j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-819faf3021fd]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1966

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