Seiko Cal. 3878 - 560

The 3878-560 is a sought-after Solar piece from Seiko's golden era. With its 20mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-e02ec59fc244]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

35j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1975

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