Seiko Cal. 6378 - 879

Released in 1984, the Cal. 6378 with design code 879 was part of Seiko's domestic market collection. Powered by the 6378 caliber with 33j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-c32d2fd13fc5]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1984

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