Seiko Cal. 6646 - 817

This Hand-Winding model from 1977 features a 40mm PVD Black case. Powered by the 6646 caliber with 18j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-df05100a971a]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

18j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1977

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