Seiko Cal. 6391 - 712

Seiko 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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