Seiko Cal. 5641 - 664

The 5641-664 is a sought-after Quartz piece from Seiko's golden era. It features a White dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-aec270fc8338]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

34mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1974

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