Seiko Cal. 3861 - 326

The 3861-326 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 3861 caliber with 24j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-516738774f99]

Also known as: Tuna, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1985

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