Seiko Cal. 4413 - 686

The 4413-686 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4413 caliber with 21j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-675b9a5b8d30]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1976

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