Seiko Cal. 6378 - 729

The Seiko 6378-729 represents an important milestone in Seiko's 1969 lineup. Powered by the 6378 caliber with 20j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-c70d3287e05b]

Also known as: Crown

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Black

Jewels

20j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1969

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