Seiko Cal. 3866 - 927

The 3866-927 is a sought-after Hand-Winding piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-37336203a3f8]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1989

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