Seiko Cal. 3865 - 921

The 3865-921 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-85ca8debf92f]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1990

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