Seiko Cal. 3816 - 974

This Solar model from 1975 features a 40mm Two-Tone case. Powered by the 3816 caliber with 20j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-ab13ca19177e]

Also known as: World Timer, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1975

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