Seiko Cal. 6633 - 760

This Quartz model from 1969 features a 38mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-b26ae53edab3]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1969

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