Seiko Cal. 6278 - 858

The 6278-858 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6278 caliber with 21j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-34f5f49fd2dc]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1980

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