Seiko Cal. 6674 - 638

The 6674-638 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6674 caliber with 29j jewels beating at 21,600 bph, it delivers a 38 hours power reserve. [seikata-wm-d459a94c6a6e]

Also known as: Tuna, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

29j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1994

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