Seiko Cal. 6391 - 712

The 6391-712 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6391 caliber with 35j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-8b79a82ab78e]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Burgundy

Jewels

35j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1974

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