Seiko Cal. 6391 - 536

Seiko 6391-536

The 6391-536 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6391 caliber with 34j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-c0b4c725bf68]

Also known as: Panda, Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
11.9mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Cream
Jewels
34j
Frequency
28,800 bph
Power Reserve
36 hours
Year
1974

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