Seiko Cal. 6377 - 641

The Seiko 6377-641 represents an important milestone in Seiko's 1985 lineup. Powered by the 6377 caliber with 35j jewels beating at 28,800 bph, it delivers a 45 hours power reserve. [seikata-wm-d5e42918e340]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1985

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