Seiko Cal. 4430 - 733

This Hand-Winding model from 1985 features a 40mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-589bb7ba7c54]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1985

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