Seiko Cal. 6377 - 673

The Seiko 6377-673 represents an important milestone in Seiko's 1977 lineup. Powered by the 6377 caliber with 22j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-7193bd58e3e4]

Also known as: Panda, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1977

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