Seiko Cal. 6391 - 764

Seiko 6391-764

The 6391-764 is a sought-after Automatic piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-b2cdfd0e6c5c]

Also known as: Turtle, Golden Tuna

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
43mm
Case Thickness
14.6mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
40m
Dial Color
Silver
Jewels
29j
Frequency
21,600 bph
Power Reserve
47 hours
Year
1982

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