Seiko Cal. 6378 - 474

The 6378-474 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6378 caliber with 25j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-df42b05b7395]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1968

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