Seiko Cal. 7121 - 745

This Spring Drive model from 1993 features a 39mm Stainless Steel case. It features a Champagne dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-94ed9c9b6ed2]

Also known as: Sumo, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1993

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