Seiko Cal. 3811 - 668

The Seiko 3811-668 represents an important milestone in Seiko's 1968 lineup. Powered by the 3811 caliber with 28j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-251de24cb8d2]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1968

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