Seiko Cal. 6615 - 633

This Spring Drive model from 1996 features a 36mm Stainless Steel case. With its 18mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-3122cf4f8cd5]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1996

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