Seiko Cal. 6646 - 278

Released in 1976, the Cal. 6646 with design code 278 was part of Seiko's domestic market collection. Powered by the 6646 caliber with 23j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-928fd86bb6d4]

Also known as: Navigator, Emperor

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1976

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