Seiko Cal. 5643 - 764

Seiko 5643-764

The 5643-764 is a sought-after Hand-Winding piece from Seiko's golden era. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-877b1ef46f5c]

Also known as: Samurai, Bullhead

Specifications

Movement
Hand-Winding
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
9.3mm
Lug Width
20mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Navy
Jewels
36j
Frequency
36,000 bph
Power Reserve
42 hours
Year
1972

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