Seiko Cal. 0721 - 523

The Seiko 0721-523 represents an important milestone in Seiko's 1997 lineup. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-69bf4eb10fc4]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

31j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1997

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