Seiko Cal. 5646 - 720

This Hand-Winding model from 1979 features a 34mm Titanium case. It features a Champagne dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-73e59bceb5f6]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

18j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1979

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