Seiko Cal. 6643 - 153

The 6643-153 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6643 caliber with 30j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-6ecefa475182]

Also known as: Helmet, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1985

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