Seiko Cal. 5641 - 544

The 5641-544 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5641 caliber with 28j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-1764eb27ce1f]

Also known as: Helmet, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1999

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