Seiko Cal. 3866 - 742

The Seiko 3866-742 represents an important milestone in Seiko's 1965 lineup. Powered by the 3866 caliber with 27j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-18164597bcc6]

Also known as: Samurai, Golden Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1965

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