Seiko Cal. 5666 - 310

The Seiko 5666-310 represents an important milestone in Seiko's 1992 lineup. Powered by the 5666 caliber with 20j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-c447f6c8afdb]

Also known as: Bullhead, Rally

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1992

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