Seiko Cal. 6640 - 147

This Quartz model from 1970 features a 39mm PVD Black case. It features a Blue Sunburst dial protected by a Mineral crystal and offers 130m of water resistance. [seikata-wm-32c63c76d28b]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

39mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1970

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