Seiko Cal. 3830 - 909

This Hand-Winding model from 1971 features a 43mm Hardlex-Coated Steel case. It features a Navy dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-faef2755787e]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

14.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1971

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