Seiko Cal. 5666 - 303

This Spring Drive model from 1997 features a 39mm PVD Black case. Powered by the 5666 caliber with 20j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-e790ac4a7894]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1997

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