Seiko Cal. 3870 - 427

The 3870-427 is a sought-after Solar piece from Seiko's golden era. Powered by the 3870 caliber with 19j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-bcb93435dec3]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1979

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