Seiko Cal. 6378 - 102

The 6378-102 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6378 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-0f1b3f2c8ac7]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

14.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Green

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1979

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