Seiko Cal. 3820 - 794

This Hand-Winding model from 1978 features a 42mm Two-Tone case. It features a Burgundy dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-401b69a54463]

Also known as: Tuna, Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1978

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