Seiko Cal. 6690 - 313

This Hand-Winding model from 1967 features a 35mm PVD Black case. It features a Green dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-7a1d97e2f27e]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

17j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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