Seiko Cal. 3865 - 311

The 3865-311 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3865 caliber with 30j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-029a6b0ca60e]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

8.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1966

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