Seiko Cal. 6391 - 738

The 6391-738 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6391 caliber with 29j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-f7084ac956cd]

Also known as: Monster, Crown

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

White

Jewels

29j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1992

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