Seiko Cal. 6644 - 587

The 6644-587 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6644 caliber with 23j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-13af859aca5e]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1998

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