Seiko Cal. 6378 - 522

The 6378-522 is a sought-after Solar piece from Seiko's golden era. Powered by the 6378 caliber with 18j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-ae711a4e589d]

Also known as: UFO, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

45mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Champagne

Jewels

18j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1965

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