Seiko Cal. 3861 - 326

Seiko 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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