Seiko Cal. 6613 - 428

This Solar model from 1976 features a 34mm Two-Tone case. With its 22mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-64052e98d241]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1976

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