Seiko Cal. 6391 - 658

This Quartz model from 1970 features a 46mm PVD Black case. Powered by the 6391 caliber with 36j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-4854b2a61f25]

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1970

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