Seiko Cal. 3856 - 537

This Spring Drive model from 1969 features a 46mm Titanium case. It features a Silver dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-8815b3947ade]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1969

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