Seiko Cal. 0730 - 221

The Seiko 0730-221 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-7828ca720b2a]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

28j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1984

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