Seiko Cal. 3818 - 647

This Quartz model from 1966 features a 40mm Two-Tone case. Powered by the 3818 caliber with 26j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-07ac4a74d7f0]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

40mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1966

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