Seiko Cal. 0721 - 366

The Seiko 0721-366 represents an important milestone in Seiko's 1984 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-4eb02789f694]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1984

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