Seiko Cal. 0780 - 347

The 0780-347 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0780 caliber with 27j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-2bd07d57ff16]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1969

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