Seiko Cal. 6617 - 372

This Spring Drive model from 1972 features a 35mm Hardlex-Coated Steel case. With its 22mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-d99726d9065d]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1972

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