Seiko Cal. 0721 - 240

This Hand-Winding model from 1968 features a 46mm Titanium case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-ec1394e51dd6]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

46mm

Case Thickness

10.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

32j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1968

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