Seiko Cal. 6648 - 391

This Automatic model from 1967 features a 44mm PVD Black case. Powered by the 6648 caliber with 18j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-803ffdce9edd]

Also known as: Golden Tuna, Flighty

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

44mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1967

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