Seiko Cal. 3880 - 421

The 3880-421 is a sought-after Solar piece from Seiko's golden era. Powered by the 3880 caliber with 36j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-280a9d9451d6]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Solar

Case Material

Titanium

Case Width

34mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1979

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