Seiko Cal. 3866 - 305

This Hand-Winding model from 1975 features a 39mm Titanium case. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-be81fa092395]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

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