Seiko Cal. 5660 - 743

The Seiko 5660-743 represents an important milestone in Seiko's 1981 lineup. It features a Cream dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-bb2ffbcfbc03]

Also known as: Tuna, Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

12.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1981

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