Seiko Cal. 5664 - 521

The Seiko 5664-521 represents an important milestone in Seiko's 1991 lineup. It features a Black dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-874497ef02aa]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1991

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