Seiko Cal. 6645 - 979

This Spring Drive model from 1990 features a 39mm PVD Black case. Powered by the 6645 caliber with 30j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-84588f0c7744]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1990

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