Seiko Cal. 5678 - 378

The 5678-378 is a sought-after Solar piece from Seiko's golden era. Powered by the 5678 caliber with 30j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-ddc5270ea142]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

36mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1976

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