Seiko Cal. 6339 - 993

Released in 1977, the Cal. 6339 with design code 993 was part of Seiko's domestic market collection. With its 22mm lug width and 14.6mm profile, it sits comfortably on most wrists. [seikata-wm-7a74be5ce368]

Also known as: Sumo, Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

14.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1977

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