Seiko Cal. 3866 - 760

The Seiko 3866-760 represents an important milestone in Seiko's 1973 lineup. Powered by the 3866 caliber with 24j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-840c48ac3c2c]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Burgundy

Jewels

24j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1973

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