Seiko Cal. 6644 - 177

The Seiko 6644-177 represents an important milestone in Seiko's 1976 lineup. Powered by the 6644 caliber with 18j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-860d00fc5916]

Also known as: Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1976

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