Seiko Cal. 5666 - 346

The Seiko 5666-346 represents an important milestone in Seiko's 1971 lineup. Powered by the 5666 caliber with 17j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-c5be23df8238]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1971

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