Seiko Cal. 6623 - 817

This Hand-Winding model from 1965 features a 43mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-72d703e9b16e]

Also known as: Tuna, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1965

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