Seiko Cal. 3861 - 688

The 3861-688 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-bbc3cc9c72e9]

Also known as: Helmet, UFO

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

24j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1991

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