Seiko Cal. 0721 - 231

This Spring Drive model from 1997 features a 43mm PVD Black case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-1be7fe38592d]

Also known as: UFO, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1997

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