Seiko Cal. 3840 - 375

This Hand-Winding model from 1968 features a 36mm Two-Tone case. Powered by the 3840 caliber with 36j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-7591338257f6]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1968

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