Seiko Cal. 6391 - 307

The 6391-307 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-839bd4ea102d]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Black

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1965

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